PlayStation 4 system software

Orbis OS
	Operating system and user interface of the PlayStation 4 in 1.01 version
Developer	Sony Interactive Entertainment
Written in	C, C++ for PS Plus and online services settings / PPC
OS family	Unix-like, (FreeBSD)
Working state	Current
Source model	Closed source, with open-source components
Initial release	1.01 / November 15, 2013
Latest release	11.50 / March 13, 2024
Available in	Arabic, Chinese (Simplified), Chinese (Traditional), Czech, Danish, Dutch, English (United Kingdom), English (United States), Finnish, French (Canada), French (France), German, Greek, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Brazil), Portuguese (Portugal), Romanian, Russian, Spanish (Latin America), Spanish (Spain), Swedish, Thai, Turkish, Ukrainian, Vietnamese
Update method	Direct download; PlayStation 4 Format Blu-ray Disc; Download to USB
Platforms	PlayStation 4 (original); PlayStation 4 Slim; PlayStation 4 Pro;
Kernel type	Monolithic with dynamically loadable modules
Default; user interface	PlayStation Dynamic Menu
Preceded by	PlayStation 3 (system software)
Succeeded by	PlayStation 5 (system software)
Official website	USA; EU; Japan;

The PlayStation 4 system software is the updatable firmware and operating system of the PlayStation 4. The operating system is Orbis OS, based on FreeBSD 9.

^ "Open Source Software used in PlayStation®4". Sony Interactive Entertainment Inc. Retrieved January 12, 2015.
^ "PlayStation 4 Release Date". IGN. February 4, 2013.
^ "PS4". PlayStation.
^ "System Language". PlayStation 4 User's Guide. Sony Interactive Entertainment, Inc. March 24, 2022.
^ Hurley, Leon (August 20, 2013). "PS4 dynamic menu featured live video feeds of friends games & game-specific messaging". Archived from the original on October 30, 2013. Retrieved October 25, 2013.