Mark VanderVoord (@mvandervoord) spoke with us about leading open source projects and test driven development.

His site is ThrowTheSwitch.org, a good place to get started with test driven development. Get more info (and a coupon) for his course. Mark's book is Embedded Testing with Unity and CMock. 

Lengthy list of unit testing frameworks for C

Why's Guide to Learning Ruby (free! with entertaining comics!)

D Lang