For developers, who are building real-time data-driven applications, Redis is the preferred, fastest, and most feature-rich cache, data structure server, and document and vector query engine.

The PHP Interpreter

How to create an OS from scratch

Cross-platform asynchronous I/O

TCP port scanner, spews SYN packets asynchronously, scanning entire Internet in under 5 minutes.

BCC - Tools for BPF-based Linux IO analysis, networking, monitoring, and more

build-once run-anywhere c library

Open-source keyboard firmware for Atmel AVR and Arm USB families

i3-compatible Wayland compositor

Embed the Power of Lua into NGINX HTTP servers

hydra

A simple Minecraft clone written in C using modern OpenGL (shaders).

A tiling window manager for X11

Xv6 for RISC-V

A text editor in less than 1000 LOC with syntax highlight and search.

A tiling window manager based on binary space partitioning

Disque is a distributed message broker

tiniest x86-64-linux emulator

A vector search SQLite extension that runs anywhere!

OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.

A network filesystem client to connect to SSH servers

πfs - the data-free filesystem!

Low-level unprivileged sandboxing tool used by Flatpak and similar projects

xhyve, a lightweight OS X virtualization solution

Lightweight and customizable notification daemon

The seL4 microkernel

A C library for parsing/normalizing street addresses around the world. Powered by statistical NLP and open geo data.

uWSGI application server container

A hacker's userspace TCP/IP stack

Simple X hotkey daemon