Calculix Websites
CAELinux
CAELinux: an open source LiveDVD Linux distribution dedicated to computer aided engineering, scientific simulation, finite element analysis and computational fluid dynamics (CAE / FEA / CFD)
SimScale - Engineering simulation in your browser
The SimScale platform enables engineers around the globe to run sophisticated engineering simulations within a standard web browser - efficient, scalable and flexible.
ClassPlanner - Class Timetabling Software
Class timetable software, suited for university or college administrators. The web based software is pleasant to use, and fully supported.