Portable Celtx is a free, open source software tool for writing and formatting a screenplay to meet the exacting screenplay submission standards set by the theater and film industries.
Onepoint Project is the first open source enterprise project management solution integrating project and resource management, time tracking, monitoring and controlling into a single, easy-to-use tool. Look for Onepoint Project on Facebook & Twitter!
GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching geometry, algebra, statistics, and calculus. Download the free software at http://www.geogebra.org. Find the source code at http://www.geogebra.org/trac