Commercial Posting.
3DOptix has recently launched a FREE, cloud-based (no installation is needed) Optical Design & Simulation software tool.
Link: https://design.3doptix.com/
Teaser :
3Doptix revolutionary cloud-based ray optics simulation platform runs on the user’s browser and allows the implementation of versatile optical designs.
The simulation platform has a build-in, off-the-shelf optomechanical component, and common light sources library, as well as a growing optical elements database from leading vendors.
You can also use the 3DOptix optomechanics to design a 3D setup or to build a design with a minimum alignment process - an out of the box working setup.