PHP extension wrapping Adam Langley's curve25519-donna implementation of DJB's Diffie-Hellman function

A highly scalable real-time graphing system

Whisper is a file-based time-series database format for Graphite.

Carbon is one of the components of Graphite, and is responsible for receiving metrics over the network and writing them down to disk using a storage backend.

A robust apache access log parser built in PHP

Xdebug — Step Debugger and Debugging Aid for PHP

The PHP Interpreter

Daemon for easy but powerful stats aggregation