- Arch Linux package: http://aur.archlinux.org/packages.php?ID=59763
- Brothersoft: http://www.brothersoft.com/sphaerica-download-347125.html
- Softpedia: http://mac.softpedia.com/get/Math-Scientific/Sphaerica.shtml
- SoftSea: http://www.softsea.com/review/Sphaerica.html
- Apponic: http://sphaerica.apponic.com/download/
The program is also available on many pirate sites. Please note, however, that the program is completely free. It is strongly advised to download the software from the official project web site.