100% Client-Side Developer Tools. Zero Tracking. Zero Latenc
Most online developer utilities are "black boxes." When you paste a JWT, a JSON payload, or a private key into a random formatter, you are trusting a stranger's server with your data.
CipherKit was built for developers who work in high-security environments where "Server-Side" is a dealbreaker. It is a suite of 77+ essential tools—from AES-256 encryption to synchronized Diff Checkers—that run entirely in your browser. We don't have a backend. We don't have logs. We don't want your data.
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7Hey everyone! 👋 I built CipherKit as a side project because I was genuinely tired of pasting proprietary JSON payloads and JWTs into random, ad-filled websites. It always felt like a massive data-leak risk at work. So, I built a zero-tracking alternative. CipherKit is a suite of 77+ daily dev tools (Formatters, Encoders, Crypto, Diff Checkers) that run 100% locally in your browser. There is no backend, no server logs, and no network latency—just fast, clean Vanilla JS. Since we're all builders here, I’d love your brutal feedback. Try to break the parsers, or test out the line-level Diff Checker. Let me know what UX feels clunky, or what obscure daily tool I completely forgot to include! Cheers, Karthick
Currently focusing on product-market fit, distribution, and timing while building B2B and B2C SaaS projects.
A cryptography "toolkit" that makes encryption accessible for people that want to understand how it works. I particularly liked the cipher library and the cryptoanalysis tool to learn how cyphers are broken.
Thanks, Pat! While I originally built it to solve my own daily workflow frustrations, I absolutely love that it's doubling as an educational tool. Making those cryptographic concepts visible and accessible was a big part of the design process!
It is just amazing tool I have ever seen.
Thank you so much for the kind words! With 85 different utilities in there, let me know which one ends up being your most used!
Creating new language acquisition tools
I understand the problem, but doesn't this still need us to trust you to not change your mind about collecting data?
That’s a very fair point, Salah. Technically, any web app developer could push an update tomorrow that changes how data is handled. But the protection here is continuous verifiability. Because the app is targeted at developers, any sudden introduction of network payloads would be spotted in the Network tab immediately, completely destroying the product's core value proposition. For ultimate peace of mind, because it's a static client-side tool, you can actually just install it as a PWA or save the page locally and use it completely offline forever, making any future updates I push irrelevant to you.