star-canopy: a free (GPLv3) space skybox tool
Posted: Thu Oct 29, 2026 9:09 pm
A friend of mine made this space skybox tool. The UI is a bit odd, but the results are pretty good. There are probably some controls you'll wish it had, like a bit more control of the color, brightness etc. If the README sounds a bit, uh, AI generated, well, I am sure that it was, the whole thing was made with heavy use of AI, nevertheless, the quality of the output may win you over. It uses the GPU to ray march nebulas, and maybe everything else too.
You can see a gallery here: https://canopy.chalkwalkmusic.com/docs/gallery
Source code is here: https://github.com/chalkwalk/star-canopy
License is GPLv3
Several output formats, cubemap, equirectangular, HDR and 8-bit per channel png.
You can see some incidental use of the output of star-canopy in this video I made of my game, Space Nerds in Space:
You can see a gallery here: https://canopy.chalkwalkmusic.com/docs/gallery
Source code is here: https://github.com/chalkwalk/star-canopy
License is GPLv3
Several output formats, cubemap, equirectangular, HDR and 8-bit per channel png.
You can see some incidental use of the output of star-canopy in this video I made of my game, Space Nerds in Space: