Linux kernel source tree
Moved to https://github.com/nodejs/node
Ruby on Rails
Redis is an in-memory database that persists on disk. The data model is key-value, but many different kind of values are supported: Strings, Lists, Sets, Sorted Sets, Hashes, HyperLogLogs, Bitmaps.
A safe, concurrent, practical language.
A virtual machine designed for executing programs written in Hack and PHP.