The Visualization ToolKit (VTK): an open-source system for 3D graphics, image processing, visualization, computational geometry, and volume rendering..
	CMake: an open-source, cross-platform build system used to build Open Chemistry.
	CDash is an open source, web-based software testing server. CDash aggregates, analyzes and displays the results of software testing processes submitted from clients located around the world.
	Gerrit: a web based code review system, facilitating online code reviews for projects using the Git version control system.
	Open Babel: Open Babel is a chemical toolbox designed to speak the many languages of chemical data. It's an open, collaborative project allowing anyone to search, convert, analyze, or store data from molecular modeling,chemistry, solid-state materials, biochemistry, or related areas.