
CapyToolkit | Free Client-Side Browser Utilities
Free browser utilities for developer work, hardware testing, and audio—100% client-side with no data uploads.
ChillyCapy · HN
CapyToolkit – Browser-native developer and hardware diagnostic tools
The full gallery
Tech stack
60 projects

Free browser utilities for developer work, hardware testing, and audio—100% client-side with no data uploads.
ChillyCapy · HN
CapyToolkit – Browser-native developer and hardware diagnostic tools

Cull and edit RAW photos in your browser with local processing.
@am56ay · X

Create custom apps and tools in your browser without writing code.
thejarren · HN
Hey HN, I'm really excited to share Emra with you. The yc description would be: It's like "Notion meets Lovable". It's a workspace where you build full apps using AI and every app sits on one shared database and service layer. Generated apps are always editable, and (coming soon:) can interact with each other in the workspace. I'm of the opinion that the cost of software will go rapidly to zero (I don't think that's too surprising to any of you), but there will always be room for effort and creativity. Emra is essentially built for the future where every person is a developer. Essentially personal software for everyone. So far I've built notes apps with a 3d graph view to see connections, a video editing app and a canvas design tool (figma clone) with export capabilities, as well as a collection of project management tools and games. Right now the most satisfying thing is being able to fix a bug I run into in around the same amount of time that it takes to send a bug report in any tr

Remove duplicates and clean messy text without uploading your data.
u/PsychologicalCoat976 · Reddit
I got tired of cleaning messy lists manually, so I built a 100% private web tool that runs entirely in your browser Hey everyone! 👋 I constantly found myself wasting time removing duplicates, cleaning up random junk text, and sorting data. I wanted something fast, but I didn't want to upload sensitive text or lists to random, sketchy websites. So, I built Text Tools (part of my Browser-Toolkit project). Key features: 100% Private: Zero data leaves your device. Everyt

Play a browser game instantly with no wallet or setup.
@NormiePepeNFT · X
Want to have some fun? 🐸🎮 Try the NOPE game — built entirely with Claude Code. No wallet connection required. No complicated setup. Just jump in and play. Have some fun. Be NOPE. 💚

drop an html file. get a public url. free, no signup, links live for 7 days. share single-page html in one click.
@kylebuildsweb · X

Merge, split, compress, and convert PDFs in your browser without uploading files.
@muzammilkarimi · X

Convert between JSON, CSV, Excel, XML, YAML and other data formats directly in your browser.
@NaimBiswas11 · X
Developers work with different data formats every day — JSON, CSV, XML, YAML, and Excel files are everywhere. But finding a simple, fast, and privacy-friendly way to convert and process these formats is not always easy.

Browser-based suite of 118 privacy-focused tools for images, PDFs, SEO, and media.
@ayan11200 · X
try this one Free solution

Transform the web into your own API. Valendata automates web data extraction from browser automation to structured APIs with zero maintenance. Trusted by 100+ data teams.
@valy_data · X

Share files and text directly between browsers without server storage or login.
@bytestreak · X
Building a frictionless, forever free file sharing utility tool. Check it out here:

Edit PDFs in your browser with compression, merging, AI analysis, and no cloud uploads.
@pdfproindia · X