IBM İşletim Sistemi
Vikikitap, açık-kaynak kitap derlemeleri
- PC-DOS (originally nearly indistinguishable from Microsoft MS-DOS)
- OS/2 (developed jointly with Microsoft)
- OS/2 Warp
- eComStation (licensed to Serenity Systems International)
- Basic Operating System (first system released for the System 360, as an interim)
- TOS
- OS/360 (first OS planned for the System 360 architecture)
- DOS/360
- DOS/VSE
- z/VSE (latest version of the VSE line)
- VM/CMS
- z/VM (latest version of the VM line)
- MFT (later called OS/VS1)
- MVT (later called OS/VS2)
- SVS
- MVS (latest variant of MVT)
- [[TPF
- OS/390
- z/OS, Unix-like, (latest version of IBM mainframe OS)
- System Support Product, or SSP, for IBM System/34 and System/36 minicomputers
- i5/OS formerly OS/400
- AIX (a version of Unix)
- AOS (a version of BSD Unix)
- ALCS
- IBSYS
- DPPX
- K42
IBM has also contributed a significant amount of code to the open source operating system Linux (below).