Decentralized Autonomous Regulated Company (DARC), a company virtual machine that runs on any EVM-compatible blockchain, with on-chain law system, multi-level tokens and dividends mechanism.

Berty is a secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the network

The Willow Protocol website.

Any aspect of the Convex stack, from Clojure

zkSnark circuit compiler

An open-source scratch-off style map to track your travels.