Concurrency permutation testing tool for Rust.

Rust crypto w/ zero default deps: BLAKE3, Ed25519/X25519, hashes, MACs, KDFs, AEADs, and checksums w/ full SIMD/ASM acceleration

The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.

ZeroMQ RFC project

An open source, self-hosted implementation of the Tailscale control server

A thread-per-core async Rust runtime with IOCP/io_uring/polling.

Vim filetype and tools support for Crystal language.

Test Unit for the Crystal programming language

Fastest pure Rust implementation of LZ4 compression/decompression.

Public key cryptography library for Ruby providing the X25519 Diffie-Hellman function

Agentic Coding for Builders who Ship

A command-line hex viewer

Easily build Ruby native extensions in Rust

Which programming language is best for AI coding agents? Benchmarking 13 languages with Claude Code.

Make text objects with various ruby block structures.

OpenBSD tool to sign and verify signatures on files. Portable version.

minitest provides a complete suite of testing facilities supporting TDD, BDD, and benchmarking.

Moor is a pager. It's designed to just do the right thing without any configuration.

Tame the quickfix window.

Run your tests at the speed of thought

dispatch.vim: Asynchronous build and test dispatcher

Collection of Alacritty color schemes

Debugging functionality for Ruby

Extremely fast tool to remove duplicates and other lint from your filesystem

fugitive.vim: A Git wrapper so awesome, it should be illegal

A little emoji language that compiles down to Ruby. "It's just ruby."

A Unicode regular expression library written in Ruby

A YAML parser written in Ruby