SolarOS is an operating system used on Neutron, inc mobile devices, and personal computers. The first release was in 2004. It is currently used on SolarPC, SolarBook, SolarPhone, SolarGear and SolarHome. Typically, major releases are available every six months-1 year. The first version was based off the RobloxOS 5.4 kernel. The most recent desktop version is Enceladus 12, which was released on October 3, 2024.