StudioNEST Essence is the base library of all of our 3D tools.
It contains several C++ classes from simple string operations down to complex geometric operations. Essence can give you a boost when developing, by providing all of the basic framework you need.
Home Page: http://opensource.studionestbarcelona.com/studio_NEST/essence.html
Project Page: http://github.com/studioNEST/Essence
Platform: Windows, Linux
License: LGPL v3