FreeAstro

GNU/Linux

• Debian stable (stretch): 64 bits
• Debian testing: 64 bits

 $ sudo apt-get install siril

• Ubuntu / Linux Mint:

 $ sudo add-apt-repository ppa:lock042/siril
 $ sudo apt-get update
 $ sudo apt-get install siril

• Fedora, Mageia 6: All

 # dnf install siril

• Arch Linux has both the release version and the git development version in the user repository (AUR).
• AppImage: If you don't find a package for your distribution, you can try to download the AppImage binary. It has been tested on many systems and could work on yours. Make the file executable, and run it. That's all.