Opentestudox

What it does

Opentestudox is a privacy-first messaging system where encryption happens on your device, not the server. The server acts only as a relay — it cannot read messages or control keys. Built with client-side cryptography (WASM/libsodium) and locally generated passphrases using secure randomness. This project explores a core question: Can we reduce trust in web-based systems, or only shift it?

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  ADAMANT Messenger2020 · ▲79

  Decentralized anonymous blockchain messenger. Crypto In-Chat

• 
  Cryptocat2014 · ▲61

  In-browser encrypted chat (open source)

• AE
  An Elliptic Curve-Based Secure Chat, Written Using Rust and Protobuf2024 · github.com · ▲66

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• LP
  Local Privacy Firewall-blocks PII and secrets before ChatGPT sees themDec 2025 · github.com · ▲111

  OP here. I built this because I recently caught myself almost pasting a block of logs containing AWS keys into Claude. The Problem: I need the reasoning capabilities of cloud models (GPT/Claude/Gemini), but I can't trust myself not to accidentally leak PII or secrets. The Solution: A Chrome extension that acts as a local middleware. It intercepts the prompt and runs a local BERT model (via a Python FastAPI backend) to scrub names, emails, and keys before the request leaves the browser. A few notes up front (to set expectations clearly): Everything runs 100% locally. Regex detection…

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  Crypton.sh - SMS2018 · ▲85

  Secure Anonymous SMS in the cloud (and a phone number)

• OD
  Opensource Desktop Implementation of the Threema Crypto Messenger2016 · github.com · ▲39

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  Dograh▲592

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  AI · May 2026 · pollyreach.ai

• NW
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  Life & fun · May 2026 · github.com

• FM
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  Dev tools · May 2026 · github.com