| Android | Google | — | Apache Software License 2.0, GNU General Public License, version 2.0 |
| Android Go | — | 2017 | — |
| Binary Runtime Environment for Wireless | Qualcomm | — | — |
| Googlebook OS | Google DeepMind, Google | — | — |
| IOS | Apple Inc. | 2007 | proprietary license |
| ITsART | — | — | — |
| MacOS | Apple Inc. | 2001 | BSD licenses, proprietary license, Apple Public Source License |
| Open Enterprise Server | Novell | — | — |
| UCSD p-System | — | — | — |
| Vw.os | Volkswagen Group | — | — |