Raidcall 7.2.2

This program is designed to make communicating with groups of friends, family, and colleagues easier than ever before. It's a group communication software tool that won't take up a lot of space on your computer and uses minimal CPU resources.

http://www2.raidcall.com

OpenRocket 13.05

This fun and free program allows you to design a rocket and then simulate its launch before building the physical device. This can save you time, hassle, and money. Key features include automatic design optimization and staging and clustering support.

http://openrocket.sourceforge.net

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