StaticGen : Top Open-Source Static Site Generators
Alpaca : Given a web API, Generate client libraries in node, php, python, ruby
SAPID : free ware open source CMS software with XML Sapiens, file flat, WYSIWYG, RSS and web services development tool (for news publishing, gallery, survey, ...
IcoMoon : IcoMoon is an icon solution, providing three main services: Vector Icon Packs, The IcoMoon App, and an Icon Delivery Network.
Grav : Grav is a modern open source flat-file CMS written in PHP
An extremely simple, pluggable static site generator.
