Godot Engine – Multi-platform 2D and 3D game engine

Bitcoin Core integration/staging tree

Tesseract Open Source OCR Engine (main repository)

SRS is a simple, high-efficiency, real-time media server supporting RTMP, WebRTC, HLS, HTTP-FLV, HTTP-TS, SRT, MPEG-DASH, and GB28181.

NoSQL data store using the Seastar framework, compatible with Apache Cassandra and Amazon DynamoDB

Cataclysm - Dark Days Ahead. A turn-based survival game set in a post-apocalyptic world.

A fast compressor/decompressor

Open Source Communication Provider based on WebRTC and Cloud technologies

An open source flash player implementation

A lightweight RTMFP, RTMP, WebSocket and HTTP server!

CumulusServer is a complete open source and cross-platform RTMFP server extensible by way of scripting