Free Websites
Consensus.app (Find The Best Science, Faster)
SimScale [Fluid & Air Simulations]
SourceForge [The Complete Open-Source and Business Software Platform]
Protein Folding Program (FoldingAtHome.org)
Genomicus [A genome browser that enables users to navigate in genomes in several dimensions]
OneZoom: Tree of Life Explorer
Free Programs
Algodoo [The best free 2D physics based program] (Can make games from it)
Celestia [The best free space program] [Can be modded]
The Celestia Motherlode [Mods for Celestia]
ChemSketch [Free Software for Drawing Chemical Structures]
16 Open-source Physics Simulation Engine
Programs That Might Have To Be Bought
Best Science Games for Students