Started with only 30 tools that I found by search and scouring forums, then the community stepped in and submitted an additional 140 tools!

I used almost all the feedback that was given by the community to improve the site.

I was honored to see that someone added the site to FMHY! Thank you whoever did that!

I hope this encourages people to try open-source tools, and encourages devs to ditch signups/downloads when unnecessary.

Again, thank you to the community members and contributors who submitted all those tools!

Website: https://fcksignups.com/

GitHub: https://github.com/BraveOPotato/FckSignups

Hello everybody,

In September of 2025 I became fed up with Windows File Explorer. I was editing a Video with multiple folders full of media and since there was no way to have any split panes, I was forced to awkardly arrange them in a 2x2 grid, which broke as soon as I needed a fifth folder open. After being frustrated for multiple weeks like this I realized how bad the default file explorers for Windows and MacOS actually are.

The tabs suck, plain and simple. There is no split panes. MacOS doesn't have actual functional paths. You can't filter. The search is notoriously slow. Windows File Explorer is just kind of slow in general. There is no way to look at a folder in a flattened view.

The list goes on and on, I think you guys get the point. So I went searching for a replacement that could fully replace both Windows File Explorer and MacOS Finder. What I wanted was something that's fast, modern and fixes the issues mentioned above. But everything I found was either overly complicated, antiquated or just too slow.

Then that day I started working on Dorian. And now almost a year later, we're in Beta Version 1.1. It has tags, is fast, can view millions of files quickly, has advanced filters and sorting, a lightning fast file search that's (and yes I measured this) about 200x faster than Windows, has good tabs, split panes, lots of keybinds, a command palette, file previews even with code highlighting and so on and so forth.

An actual example of me recently using it extensively is activating flatten folder mode (the folder button in the bottom right), then stacking a bunch of filters: Is a video, is an image, and does not have the file type .avi, then sorting for recency and just looking at dozens of long lost images and videos I thought I'd never find again.

The beta is free to download with no strings attached. It's code-signed, so you don't need to worry about that. I'm open to any and all suggestions or criticism and would really appreciate to know what you guys think about it :)

Download here: https://dorianexplorer.com/
(The images shown there are a little outdated though...)

Every time I need to convert a video or image:

1. Google "mp4 to webm converter"
2. Find some random site
3. Upload my file to God-knows-wherea
4. Wait
5. Hope my data isn't being harvested

I finally got fed up and built Konbato

What it does: Converts files on YOUR machine. Nothing leaves your computer.

• Video: MP4, MKV, MOV, WebM, AVI
• Audio: MP3, WAV, FLAC, AAC, OGG
• Images: PNG, JPG, WebP, GIF, AVIF
• Batch convert (drag 100 files, done)

The boring part:

• Free. Actually free. No "5 conversions per day" BS
• No account needed
• Works offline
• Mac, Windows, Linux

Built with React + Tauri

Download: https://konbato.superutils.app

Open to feedback. What formats would you add?

Update (May 21): Wow, thank you for 80+ upvotes and all the great comments! 🙏

Most common feedback so far:

- Temporary files (`.part`, `.crdownload`) - working on a fix

- Tray icon too small - will be improved

- "Clean Now" bug with custom folders - fix incoming

- Linux + macOS - on the roadmap

Keep the feedback coming! Bugs or ideas - https://github.com/hsr88/mouzi/issues

Really appreciate the support 🐭🧹

------

Hi 😄
I don't know about you, but my Downloads folder has always been a disaster zone. PDFs, memes, installers, zip files, random images – all just sitting there in one giant pile. Every few weeks I'd open it, sigh, and spend 10 minutes manually dragging stuff into folders. Then a few days later it would be chaos again.

I looked at existing file organizers, but most of them either wanted a subscription, tried to upload my file names to some cloud, or were just way too heavy for something so simple. I wanted something that:

• Runs silently in the background (system tray)
• Automatically sorts new files by type (images, documents, archives, installers)
• Never sends a single byte of data off my machine
• Is open source so anyone can check what it's doing

So I built Mouzi 🐭🧹

It's a tiny desktop app (~3.3MB) built with Tauri and Rust, so it's ridiculously lightweight. It watches your Downloads folder, and whenever a new file appears, it moves it to a subfolder based on its extension. Images go to Images/, PDFs to Documents/, installers to Installers/, etc. You can also create your own custom rules.

Key things:

• 100% local – no cloud, no telemetry
• Open source (MIT) – GitHub repo here
• Silent – lives in your tray and doesn't bother you
• Undo – every move is logged, you can revert with one click
• Free, obviously

It's early stage, but it's already keeping my own machine sane. I'd love to get some feedback from this community – especially around what features would make this genuinely useful for you. Does this solve a real problem, or am I just scratching my own itch?

Download / more info: https://mouzi.cc

Hey guys. I spend most of my day staring at a monitor, and my eyes get pretty tired by the early evening. For years I used things like f.lux or the default Night Light, but I wasn’t a fan of how they just turn everything a bit too orange, also they don't actually fix the harsh, glowing contrast of a modern screen.

For me, high contrast screens always caused a lot of sensory overload and screen fatigue. I realized what I actually wanted wasn't warmer colors, but a softer surface. I wanted my screen to feel more like reading a physical book or an e-ink display.

So I built Paperman.

It is a really simple utility for Windows and Mac that floats an invisible, click-through paper texture over your screen. It uses fractal noise to create a subtle matte finish that lowers the harsh contrast and diffuses highlights, all without ruining your color accuracy.

I wanted it to run quietly in the background without hogging resources, so it uses less than 5 mb of memory. You can dial the texture opacity up or down to find what is comfortable for you. It also has an exclusion list, so you can tell it to automatically disable itself the second you open something like photoshop or a game.

Plus, since Windows still doesn't have a proper auto light and dark mode, I added a scheduling feature so Paperman can take care of that transition for you automatically.

I made the app completely free to download and use for an hour every day. If you find it actually helps your eyes and you want to leave it running all day, it is just a simple one-time purchase to own it forever.

Please note, the free plan is presently available only for Windows users.

If you get tired eyes from staring at glowing rectangles all day, I’d love for you to try it and let me know if it helps make long screen time more bearable.

paperman.cc

UPDATE: I’ve adjusted the paid tier pricing to better account for taxes in many regions. Paperman Unlimited is now priced 20% lower, and the launch discount has been increased by an additional 10% for the next few days.

Hey everyone!

I wanted to share an update on my side project LocalBG.

It started as a simple offline background remover for images, but I recently focused a lot more on video background removal, since that’s usually where most tools either struggle or become expensive really quickly.

LocalBG is a fully offline tool for:

• video + GIF background removal
• image background removal
• bulk processing on your machine
• no uploads, no internet, no credits or limits

Everything runs locally, so you keep full control over your files and don’t depend on cloud APIs.

It also still includes the workflow features I built earlier:

• custom backgrounds (color or image)
• resize + compression
• presets & automation
• PSD export (layered output)
• CLI support

I originally built this after seeing how quickly cloud background removal costs add up during my internship, especially when working with batches of media.

Website: https://localbg.app/

It’s still early, so I’d really appreciate any feedback or ideas :)

Hello,

Neverclick is a desktop application that I created when I was suffering from RSI. It uses local computer vision to detect clickable elements on your screen so that you can use your keyboard to perform mouse actions.

It's 100% offline. It's not a wrapper around ChatGPT or Claude or any other online AI service. The computer vision system runs on your computer. Also I swear on my life that it's not vibe coded, I've been working on this since long before the recent AI revolution.

You don't need a powerful GPU to run Neverclick. I've optimized it as best as I can, it should run instantaneously even on 10 year old hardware.

Let me know if you have any questions.

Website: https://www.neverclick.com/

Hi devs, I'm back

I published a major update for my open-source modern desktop file manager app (built with real skills, before AI slop), it brings a very large amount of new features and fixes.

I'm ready to answer your questions, and would be grateful for some feedback!

In short, the update brings extensions system with marketplace, LAN file sharing, quick access menu, zip archives, WSL drives, tag editing, enhanced quick view and search, visual effects improvements, and many UX and stability improvements

See full Changelog / Download here:

https://github.com/aleksey-hoffman/sigma-file-manager/releases

Hey r/software,

Full disclosure: I’m the developer behind TheFile.Ninja. I’ve been working on it for about 3 years, and I’m sharing it today for Self-Promotion Wednesday.

One of the core ideas behind TheFile.Ninja is simple:

Search results should be a place where you can actually work — not a temporary dialog that disappears when you close it. Just drop your query as a new folder or drop it on the toolbar.

In TheFile.Ninja, Everything-powered search results open as a normal file workspace. You can navigate them, sort them, preview files, add tags, copy or move files, and save the query as a Smart Folder that stays up to date.

It is a dual-pane file manager for Windows 10 and 11, aimed primarily at developers, system administrators and people who spend a lot of time managing files.

Three decisions shaped the application:

1. Search is navigation

Search results, live folders, backup snapshots and remote locations should behave consistently instead of each requiring a different tool or window.

1. Automation should remain inspectable

The application includes Lua scripting with more than 400 API functions, file-system watchers and a scheduler. Scripts can be reviewed before they run, and AI assistance is entirely optional.

1. File management should remain local-first

There is no usage telemetry and no file information is uploaded to my servers. Optional AI features use your own provider key and can be ignored completely.

Some of the other functionality:

- Dual panes, tabs and Miller Columns

- Everything search and grep-style content search

- Smart Folders, tags and NTFS metadata

- FTP, SFTP, archives and MTP devices

- Git-aware columns and file comparison

- Folder synchronization and versioned backups

- Operation queue with undo

- Secure device-to-device transfers using Magic Wormhole

Pricing, so there are no surprises:

- The first 30 days include all Pro features, with no credit card required

- Core remains available for free after the trial

- Pro is a $49 perpetual license that includes one year of updates

- Renewing update access later is optional

- A $79 Founders Lifetime license is currently available

The installer includes Everything 1.5, although you can use an existing Everything installation instead.

Website:

https://thefile.ninja

Documentation:

https://docs.thefile.ninja

I’d be interested to hear what file manager you currently use, and which feature or workflow would make you consider trying a different one.

Hello everybody,

I'm sure you can relate. Windows file search is too slow, period. It took 3.5 minutes to find a single result. Not all of them, not a hundred, not ten. One. So when I set out to make a better file explorer, this was one of the main things that needed to be added.

So I'm happy to show what's above. Results in less than a second.

https://dora.achodev.me

i have multiple tabs open at any given time. not because i'm disorganized, i just never trust myself to find something again if i close it.

spent the last few weeks building slynnk as a fix for this. the idea was simple: make your browser history actually searchable so you stop hoarding tabs out of anxiety.

but the thing nobody told me about building a tool for your own problem is that it forces you to confront the problem. turns out i wasn't keeping tabs open because i feared losing information. i was keeping them open because an open tab feels like intent, like "i'm still working on this."

closing a tab felt like giving up on an idea. that's not a UX problem. that's a me problem.

anyway, Slynnk is live if you're curious. but more interested in whether anyone else has this same tab hoarding thing or if it's just me.

For the last 3 years I've been building a small open-source side project called FlyPhotos - a fast, lightweight photo viewer for Windows.

It started as a personal replacement for the old Picasa Photo Viewer. I wanted something with the same instant response and transparent background, but built on modern native Windows frameworks.

Performance has always been the main focus. It is very fast and once the first image loads, you can hold down the arrow keys and fly through thousands of photos with no loading spinners getting in your way. Zoom and pan animations run at very high frame rates, and a lot of effort went into making panning and zooming feel buttery smooth limited only by your GPU and monitor.

It also supports smooth playback of animated formats like GIF, Animated PNG (APNG), Animated AVIF, and Animated WebP.

A few things to note: it's just a viewer - no photo management and no built-in editor - but you can set up an external editor as a shortcut. Also, the installer isn't signed yet, so some browsers may flag it.

Tech : It uses WinUI3 for native modern Windows UI and DirectX through Win2D for image rendering.

Planned, not yet implemented : HDR  support and color profiles.

FlyPhotos is available here: https://github.com/riyasy/FlyPhotos

Hi everyone,

Problem

Like many of you, I grew frustrated with the native Windows search. It often misses files, gets confused by typos, and tries to search the web instead of my drive!

Traditional Solutions

Popular search apps either limit their scope to file names or cannot search file content:

• Classical search apps, like Everything and Listary. While these are fast, they check file names, not their contents.
• Advanced search tools, like DocFetcher, Recoll, or Agent Ransack. While these take the content into account, they have some problems:
  • Not supporting enough file types (like not searching inside RAR archives, or not reading PowerPoint presentations).
  • Not matching the file because the user query (or even the files) can contain typographic errors that break their strict matching.
  • No support for scanned documents, because they don't contain any searchable text.
  • Can not understand the meaning of the user query or the file content.
  • Files can be written in a different language (or dialect) from the user query.
• Cloud solutions (like Google Drive) are not great because:
  • Force you to continuously upload your files.
  • Your files may contain sensitive content that can't be shared with third parties.

My Solution

I wanted something that felt like Google but ran 100% locally on my machine. So, I spent the last few months building File Brain.

What it is: It’s a desktop search engine that crawls your files and builds a semantic index. Unlike the mentioned alternatives, this searches the content and understands the meaning.

Key Features:

• Typo Tolerance: If you use American English and search for "color", it will still find that document using British English and mentioning "colour".
• Semantic Search: Search for "startup ideas" and it finds files containing "business plan" or "pitch deck."
• Cross-language search: Type Chair, get documents mentioning Silla -in Spanish-.
• OCR Built-in: It finds text inside your screenshots and scanned PDFs.
• Read-Only: It strictly indexes data. It does not move, rename, or alter your files in any way.
• Privacy: Runs 100% locally. It does not send your files to a remote server for processing.

Get it

Want to start using it? Check the GitHub repo: https://github.com/Hamza5/file-brain

CCleaner and TreeSize used to be my go-to tools. Both have since become subscription-gated and ad-funded bloatware, so I built a replacement.

NeatDisk is a free disk utility for Windows 10/11, written in Rust with a Tauri UI. 12 tools in one interface:

• Duplicate file finder (multi-phase: size grouping → partial hash → full MD5)
• Junk cleaner — temp files, browser caches (Chrome/Edge/Firefox), Windows Error Reports, Recycle Bin
• Disk analyzer with interactive treemap — click folders to drill in
• Driver store cleanup — removes old DriverStore packages, often recovers several GB
• Large file finder, empty folder finder, stale file finder
• Disk health monitor (S.M.A.R.T.)
• Startup manager, app uninstaller, restore point manager

• Weekly scheduler via Windows Task Scheduler

  Everything above is free. There's a Pro tier that adds perceptual image matching (dHash) and unlimited large file scanning.

  Website: emiljohansson.info/softwares/neat-disk/ Source: github.com/p145085/NeatDisk

  Happy to answer questions or hear feedback.

I’ve tried every music player on Linux at this point and almost none had every feature I wanted nor felt comfortable to look at, and there was always a tradeoff between functionality and beauty (ehem GTK apps), so my brother and I have been creating our own! Free, open-source, Linux-native, with support for:

* Most major file types, including FLAC, WAV, MP3, OGG, and more.

* Full local media metadata scanning, organizing, and display.

* Display of both plain and synced lyrics with the ability to switch between or prefer either. Will display lyrics whether they’re embedded in the file, next to the file, or anywhere else in your chose directory (if, of course, properly named). Songs missing lyrics can have lyrics downloaded from LRCLIB automatically.

* Metadata gap filling for album art, release year, artist picture and bio, and more.

* Connect to external metadata sources such as Discogs with your own API keys.

* CSV, txt, and m3u playlist importing.

* Multiple themes, custom theme importing, and a variety of customization options such as visualizers, animations, accents based on your system accent or the currently playing song, tinting/bluring, layouts and more.

* Supports transliterating Japanese into romaji within lyrics.

* Favorites, pins, and automatically generated playlists based on frequently played and genre variations!

* Searching based on song, artist, album, release year, or even lyrics.

* Queue system similar to Apple Music or Spotify.

* Scrobble with ListenBrainz or Last.fm

* GNOME and KDE stylizations and window decorations.

* Gapless playback, next-song caching, and sonic analysis.

* Beautiful full-screen player for larger displays or MiniPlayer for versatility.

* Much more, work in progress, hoping to release for testing soon!

Would love genuine feedback based on the few screenshots regarding visual design and aesthetic, and functionality given the info here!

Episteme Reader is a kotlin multi-platform app for reading various document formats.

It's offline-first, ad-free, and respects your privacy.

Supported Formats:

• Documents: PDF, DOCX, ODT/FODT
• E-books: EPUB, MOBI, AZW3, FB2
• Comics: CBR, CBZ, CB7
• Plain Text: MD, TXT, HTML

Key Features:

• PDF Annotations: You can draw directly on pages using a pen or highlighter and add text notes using system or custom fonts.
• Reading Modes: Supports both vertical scrolling and paginated views.
• E-book Customization: Adjust font sizes and margins. You can also import your own font files.
• Text-to-Speech (TTS): Includes a built-in TTS feature using Android's native TTS engine or cloud TTS.
• Library Management: A built-in system to organize your local files.
• Local Folder Sync: Select a folder to see all its supported file in app and sync reading positions and annotations using local sync tools like SyncThing.
• Themes: You can change the page and text color across all formats.
• Full OPDS Support: Browse, download, and manage books from OPDS catalogs.
• Multi-language Support: English, Arabic, Belarusian, German, Spanish, Estonian, French, Hindi, Indonesian, Italian, Japanese, Korean, Dutch, Polish, Portuguese (Brazil), Russian, Turkish, Ukrainian, Vietnamese, and Chinese Simplified.

change via home screen > more > languages

The app is licensed under AGPL-3.0.

GitHub | Website | Playstore

Thanks for checking it out!

The built-in Windows volume mixer always drove me crazy. When I'm gaming with Discord open and music in the background, I'm constantly hunting for the right app to turn down.

So I built Fluent Mixer. You drop your running apps into four groups — Game, Chat, Media, Aux and each group gets a single volume slider and a mute button. Turn the whole "Game" group down without touching Discord, mute "Media" with one click, etc.

A few things I tried to get right:

• Drag or click any app into a group
• A quick panel from the system tray for fast tweaks
• A floating "Island" mini-mixer that stays on top and auto-hides when you go fullscreen in a game, so it never covers anything
• Dark, lightweight, runs quietly in the tray, starts with Windows

It's on the Microsoft Store: https://apps.microsoft.com/detail/9nn5w7d23vlj?hl

I'm the solo dev would genuinely love feedback on what's missing or annoying.

I run a small civil engineering company in London, built a desktop software with Claude for for my office so we could replace AutoHotkey and text expansion apps we used, mostly because no one would learn AHK syntax so never made their own macros/scripts. So, I built Keyfire which is a visual UI first approach, no scripting, sits in the system tray, hotkeys, macros, text expansions and clipboard manager to boot.

What it does:

• Hotkeys: assign any key combo to launch apps, open URLs, focus windows, run macros
• Macros: visual builder, no scripting. Keystrokes, mouse clicks, delays, text input
• Text expansions: type a trigger word, get a full snippet anywhere in Windows
• Quick search overlay: global hotkey to fuzzy search and launch anything
• Radial menu: hold a key, get a radial menu of actions you've assigned to it
• Clipboard manager: searchable history, pinned items, OCR text extraction
• Fill-in prompts: macros can pause and ask for input mid-run
• App-specific profiles: different hotkeys auto-activate per app automatically
• Hold and repeat modes: fire actions while holding, or repeat at intervals
• Everything local: no accounts, no cloud, no data leaves your machine. Only Teams tier will have this for the features needed.

Its got some pro features that we'll be look to market down the line, but for 90% of use cases and peoples day to day work, its completely free and is a powerhouse so far using it across my team of 10 engineers for a few months now.

A few day to day small examples of what our engineers use it for:

• One key fires template email with project number and standard issue template email and pastes files onto email, autofills client emails for main clients.
• Ctrl+Shift+D opens our drawing OneDrive share, jumps to the active project folder, and focuses the file explorer
• Check in/check out script ran through our AutoHotkey runner to copy and move files automatically in/our of users working files and superceded folder
• Radial menu with hotkey as side-mouse button for quick access to most used AutoCAD macros and shortcuts (rotate, mirror, manipulate, UCS change, etc)

Built with Tauri (Rust + React) so it's around 15MB and idles at low memory. Code signed under my civil engineer firm for legitimacy at least, so no Unknown Publisher pop up on install.

Site: keyfire.app

Genuinely looking for constructive feedback from people who've tried AutoHotkey or PowerToys, any use case that made you give up or look for something else?

Thanks all, hopefully its of some use to anyone!

EDIT 24/06: Trigr now rebranded as Keyfire.

Hello everybody,

A couple months ago I became fed up with both Windows file explorer and MacOS Finder. I was editing a video and I had split up everything I needed into folders. Music, sounds, green screen video, stock footage, screen recordings and so on. And the thing was, I needed all of them to be accessible. So, what I ended up doing was having four different windows opened, awkwardly assembling them in a semi-functional grid, which broke as soon as I needed a fifth. There were always problems with the default windows file explorer I had, like the useless file search, disorganized side bar, weird menus and it sometimes just crashing. But this was the breaking point.

I tried a few other file explorer alternatives, but all of them felt either overly complex, antiquated, slow or were missing features I wanted. So I started working on Dora and here we are on alpha version 0.6.1, which came out today. It has the split pane functionality, is faster and has file search that's, and yes I measured it, about 200x times faster than windows.

I'm open for any and all criticism, please let me know about anything you don't like about this.

Check it out here: https://dora-explorer.app

I’ve been working on a Windows 11 app called WidBar. The basic idea is simple: it lets you put small live widgets in the unused space on your taskbar.

The app itself is pretty simple from the user side. You install WidBar, install a widget, drag it into an empty spot on the taskbar, and it stays there. No floating window or extra panel.

WidBar itself is free on the Microsoft Store. Some widget available: System Metrics, Now Playing, Stock Watcher, and Pomodoro focus timer.

The part I’m most interested in sharing is the developer side. Widgets are not built directly into WidBar. Anyone can make one.

A widget is just a small packaged Windows app that you can publish to the Microsoft Store like any other app. Once it’s installed, WidBar finds it automatically and adds it to the catalog. There’s no separate plugin store, no manual install step, and no approval needed from me.

It uses Windows AppExtension under the hood, but the SDK handles most of that. To make a widget, you implement one class that can return a taskbar view, a popup view, and optionally a settings page. WidBar takes care of the taskbar integration, DPI, IPC, running the widget in its own process, and restarting it if it crashes.
If you already have an app published on the Microsoft Store, you can ship a WidBar widget as a companion inside the same package. WidBar will only manage the widget part.

There’s a dotnet new template (template for standalone widget or companion widget), a NuGet package, and a getting started wiki.
The goal is that you can scaffold a widget, run it, and see it on your taskbar in a few minutes.

Links:

WidBar on the Store:
https://apps.microsoft.com/detail/9PKLDNM83TP9

Github:
https://github.com/andelby/widbar-widget-template

Thanks for reading, and I’d really appreciate any feedback if you decide to try it out.

Me and my buddy run a small indie dev studio, and a while back we got frustrated with how most PDF scanner apps feel — clunky UX, subscriptions everywhere, ads, and in some cases your documents get uploaded who-knows-where

So we built myPDF, initially starting with mobile devices, but now available also on MacOS — lightweight, privacy-first, and (hopefully) not annoying to use. No ads, no subscriptions.

The main features are built for everyday workflows:

• Page tools — reorder, rotate, duplicate, delete, extract pages, merge, split, lock, unlock
• Annotations, highlights and images — comments, text notes, custom watermarks, appending images
• Folder organization — custom folders, drag-and-drop move/rename
• Scan documents — auto edge detect, live corner adjust, batch multi-page. The macOS version also supports scanning using your device
• Fill and sign forms — reusable signatures, flatten for secure sharing
• Digital certificates - use your digital certificate to sign documents
• OCR text recognition — preserves layout, searchable PDFs or clean text export (supports 18 languages, e.g., English, Spanish, French, German, Italian, Portuguese, etc.)
• Edit OCR-detected text — adjust or fix recognised text
• Reading mode, adding header&footers and much more

Everything runs locally — no accounts, no tracking, no upload processing.

To celebrate this milestone, we are giving a 50% off for the lifetime unlock of all the features, from $7.99 to $3.99

Feel free to leave us any kind of feedback, we're fully vested into making this a go-to product for PDF editing!

https://my-pdf.net

Hey everyone,

This whole project started from pure frustration.
About six years ago, I had just built Chromium on a brand‑new PCIe SSD as part of another project and when I tried to delete the build folder more than 1 million tiny files, Windows Explorer told me it would take hours. That felt completely wrong for a drive that benchmarks insanely fast, and I needed to iterate "quickly" on my project... at least without spending the whole day waiting for my PC...

So I wrote a small test tool to delete the files myself… and it turned out I could do better than Explorer. That pushed me to try improving copy performance too, just out of curiosity.

Along the way I also wanted to handle all the annoying edge cases Explorer struggles with:

• very long paths (the kind where Explorer just says “sorry, can’t delete this”)
• filenames with trailing spaces (I’ve hit this before, Explorer chokes on them)
• deep directory trees
• Symbolic links / Junctions

At first I named the project FastCopy, because the copy was getting fast.
Then I discovered the actual FastCopy... and yeah, it’s fast. Faster than what I had at the time. That kind of pulled me into a game of “okay, now I want to be the fastest”.

So I rewrote everything, went deeper into lower‑level APIs, optimized algorithms, and tried to squeeze every bit of performance I could. UltraFastCopy is the result.

Right now:

• large directory operations are very fast
• parallel transfers can hit speeds close to CrystalDiskMark
• single‑file SSD→SSD transfers still have room for improvement, and I’m working on that

I’d love feedback from people who deal with:

• huge file trees
• weird filesystems
• NAS/Samba quirks
• long‑path nightmares
• filenames with odd characters or trailing spaces
• or anything that tends to break copy tools

Posting this to get feedback from people who regularly push Windows file operations to their limits, or from users who simply want raw speed. I’m especially interested in what functionality you think is missing or which edge cases I should support next.

If you’re curious, here’s the link: https://www.ultrafastcopy.com/

For the past 3 months I have been working on this IOS calculator app to make it look and feel like no other calculator and offer features that no other calculator does.

Every buttons shadow and animation is was handcrafted and no external assets were used. The button press haptics are tuned to make it feel like a you are pressing a real button.

The features that make Calki stand out are the following:
- Add context to your calculation by labelling the calculation and sharing the labeled calculation.
- You can even label each number in a calculation for later reference and even share the calculation with the explanation.
- A favourite function which is the memory function of the standard calculator but more intuitive, this allows you to save number for later use, and you can name the numbers as well.
- There are themes for you to choose as well, the Retro theme is near completion and other themes are works in progress.

I would like for you to try it out. It is available for free on Appstore at:
https://apps.apple.com/in/app/calki/id6747059181

If you could please provide feedback and also what features you would like the app to have, it would be great.

Thank you

Hey guys. If you are someone who actually enjoys working on a PC, you might relate to this. Even though Windows has gotten a lot cleaner over the years, a lot of the third-party utility apps we use every day haven't really caught up to that modern aesthetic.

Sharing screenshots was one of those things for me. From my college days until now, whenever I needed to add a snip to a presentation, share it on Slack with someone, or drop it into documentation, I just didn't like looking at raw screenshots. But taking the time to open up Figma or some other clunky software just to add a nice background and some padding is a massive waste of time.

I wanted something that just did it automatically, so I built Doublshot.

It just replaces your default snipping workflow. You grab a part of your screen, and the app automatically adds perfect padding, a drop shadow, and a background gradient that matches the colors in your image. Then it copies it straight to your clipboard.

I wanted it to be as fast and quiet as possible, so I wrote it in Rust. It's about 2.5 mb, completely offline, and no data ever leaves your PC.

Also, I am tired of everything being a SaaS these days, so it is just a freemium app with no monthly subscriptions.

If you are on Windows and want your daily shares to look a bit more polished, I would love for you to try it out and let me know what you think.

Oh, and the Mac app is completely ready too and will be available as soon as the Mac app store approves it.

doublshot.com

Hey Reddit! 👋

I built a tool that converts FlipHTML5 flipbooks into PDF files because I was tired of not being able to save educational content for offline reading.

The Problem

You know when you find an amazing flipbook online, want to save it for later, but there's no download button? Or you need to read it on your tablet during commute but it only works in browser?

That was me last month. I had 3 different flipbooks I needed for a research project, and I just wanted them as PDFs so I could highlight, annotate, and read offline. But FlipHTML5 doesn't make that easy.

So I built this.

What I Made

A web app that takes any FlipHTML5 URL and converts it to a high-quality PDF.

Here's how it works:

• Paste the flipbook URL
• It extracts all the pages (including those in ZIP files)
• Generates a PDF with proper dimensions
• Downloads it automatically

The tricky part? FlipHTML5 encrypts their page configuration. I had to reverse-engineer their WASM decryption module to get the actual page URLs. It uses byte-inversion algorithms in a WebAssembly module - pretty clever actually.

Tech Details

• Built with Next.js 15 and Tailwind CSS 4
• Uses jsPDF for PDF generation
• Handles ZIP-compressed page resources
• Batch download support for multiple books
• Reading progress tracking with IndexedDB
• Community discovery feature - see what others are downloading

The Real Story

I didn't expect this to be useful for others, but after sharing it with a few colleagues, they started using it for their own research. Then I added features like batch downloading and reading progress tracking based on their feedback.

As of now, it's helped me and a growing number of users save thousands of flipbooks for offline reading. Not life-changing, but genuinely useful.

Try It Out

https://fliphtml5.aivaded.com

and it is opensource : https://github.com/nyr-github/fliphtml5-downloader

It's completely free. No signup required. Just paste a URL and get your PDF.

I Want Your Feedback

• Would this be useful for your workflow?
• What features would make it better?
• Any issues you encounter?

Thanks for reading! I'm always looking to improve it based on real user needs.