Flint Particle System, Union Reator Beta1

And more libraries!

Flint Particle System - Actionscript 3 Particle Engine for Flash and Flex
see: http://flintparticles.org/
and http://github.com/richardlord/Flint for the code
and an example here:

Flint Particles 3D example - Fountain - wonderfl build flash online

Union Reactor - a development platform for creating multiuser applications
update to the newest version: Beta1
see Union Platform
and Union 1.0 Beta 1 Release Notes
Please recompile to connect to tryunion.com, we don't auto-recompile code on library updates ( for now ).