| Android | Google | — | Apache Software License 2.0, GNU General Public License, version 2.0 |
| Android KitKat | Open Handset Alliance, Google | — | Apache License, GNU General Public License |
| Android Marshmallow | Open Handset Alliance, Google | — | free software, Android Open Source Project |
| AOSC OS | Anthon Open Source Community | — | — |
| Armed Forces mobile system | — | — | proprietary license |
| Astra Linux | RusBITech | — | GNU General Public License |
| ChorusOS | Chorus Systèmes, Oracle Corporation, Sun Microsystems, Institut National de Recherche en Informatique et en Automatique | — | BSD licenses, GNU Lesser General Public License, Mozilla Public License, Sun Public License |
| Debian | The Debian Project | 1993 | GNU General Public License |
| DebWRT | — | — | — |
| Exherbo | — | — | — |
| Fedora Linux | Red Hat, IBM, Fedora Project | 2003 | MIT License |
| Firefox OS | Mozilla Foundation, Mozilla Corporation | — | Mozilla Public License, Apache License, free license |
| Flyme | Meizu | — | GNU General Public License, Apache License |
| FreeBSD | — | 1993 | 2-clause BSD License |
| Gargoyle | — | — | GNU General Public License, version 2.0 |
| Gentoo Linux | — | — | GNU General Public License |
| HyperWRT | — | — | GNU General Public License |
| IRIX | Silicon Graphics | 1988 | — |
| Microsoft Windows | Microsoft | 1985 | proprietary license |
| MIPS RISC/os | MIPS Technologies | — | — |
| MIUI | Xiaomi | — | GNU General Public License, version 3.0, Apache Software License 2.0 |
| NetBSD | — | 1993 | BSD licenses |
| OpenBSD | OpenBSD Project, Theo de Raadt | — | ISC license |
| OpenWrt | Gábor Juhos, Florian Fainelli, Hauke Mehrtens, Jo-Philipp Wich | 2004 | GNU General Public License, version 2.0 |
| Plan 9 | Bell Labs | 1992 | GNU General Public License, version 2.0, MIT License, Lucent Public License |
| RIOT | Martin Lenders, Benjamin Valentin, Alexandre Abadie | — | GNU Lesser General Public License, version 2.1 |
| Roku OS | Roku, Inc. | 2004 | — |
| RTEMS | Sebastian Huber, Joel Sherrill | — | GNU General Public License |
| Wear OS | Google | 2014 | Apache License |
| Windows 2000 | Microsoft | 2000 | proprietary license |
| Windows Embedded Compact | Microsoft | — | end-user license agreement |
| Windows NT | Microsoft | 1993 | — |
| Windows NT 3.5 | Microsoft | — | commercial software, proprietary license |
| Windows NT 3.51 | Microsoft | 1995 | proprietary license |
| Windows Server 2000 | Microsoft | 2000 | — |
| Zephyr | Wind River Systems, Linux Foundation | — | Apache Software License 2.0 |