- 200 Years of Franek Enterprises: the Making of a Tech Giant
- ALXERS Corporation
- ALXERS OS
- ALXERS OS 26
- ALXERS OS 27
- ALXERS OS 7
- ALXERS OS 8
- ALXERS OS 9
- ALXERS OS Interga
- ALXERS System Manager 79
- ALXERS X/DOS
- Alexproducto
- AndroidPPC
- Android 14D
- Android 16D
- Android 17
- Android 18
- Android 19
- Android 20
- Android 22
- Android 23
- Android BetterMIPS
- Android Upside Down Cake/Easter Egg
- AntoOS 1
- Anto (Build 1092)
- Anto (Build 1162)
- Anto (Build 1192)
- Anto (Build 1202)
- Anto (Build 1221)
- Anto (Build 1234)
- Apollo 2000
- ArcOS 1.0
- Athena
- Binbows 1.0
- Binbows 2.0
- BingOS
- BlazeOS
- Blinkbook
- BlossomOS
- Blossom 1.0
- Blossom 2
- BurstOS QNT
- CASCADES Corporation
- Calcate
- Calcium
- CalciumOS 1.0
- CalciumOS 1.p
- CalciumOS 2.0
- CalciumOS 2.p
- CalciumOS 3.p
- CalciumOS Mobile 1
- CalciumOS Mobile Stupidity
- Cardinal Computing
- Centrisoft
- CertaPC (idea)
- Chilled Windows
- ChillysMM2 OS
- Colop 1
- CosmOS 1.0
- Crows 2026
- DOS.com
- Danny5838's Windows Timeline
- Daydream Corporation
- Debugging System for Macintosh Prototypes
- Doors
- Doors XP
- Dreamcast OS
- Eating a burger with no honey mustard. OS 1.0
- EchoOS
- EclipseOS 1.0
- EclipseOS 11.06
- EclipseOS 11.12
- EclipseOS 12.06
- EclipseOS 12.12
- EclipseOS 13.06
- EclipseOS 13.12
- EclipseOS 2.0
- Eclipse 10.06
- Eclipse 10.12
- Eclipse 3.0
- Eclipse 4.0
- Eclipse Operating System
- EdgeQ
- Edge OS
- Elide Corporation
- Enclave I/E Datasystem
- End-of-Life Table
- ExoOS 1.0
- Franek Enterprises
- GUI for Soviet Computers 1.0
- GlowOS
- GyatOS Ohio
- Hairoad OS 1
- Hairoad OS 2
- Helium
- Hydronium OS
- Hyggshi OS
- IBM Arcant
- IOS 19
- IOS 20
- IOS 21
- IOS 22
- IOS 23
- IOS 24
- IOS 25
- IOS 27
- IOS 28
- IOS 66
- IOS 97
- IPadOS 27
- Interactive Labs
- Internet Explorer OS
- Internet Explorer OS 2.0
- Ios
- Irnix 10
- Irnix 9
- JaguarOS 1.0
- JaguarOS Alpha
- JaguarOS Test Release 1
- Jaguar OS 2.0
- JupiterOS
- KittenOS
- Konami
- LavaOS
- LavaOS/LavaOS Store
- LavaOS 1.0
- LavaOS 1.0/LavaOS v1.00 Pre-release v1.62
- LavaOS 2.0
- LavaOS 2.11
- LavaOS 3
- LavaOS 3.1
- LavaOS 4
- LavaOS 5
- LavaOS 6
- LavaOS 7
- LavaOS 8
- LavaOS S
- LeopardOS 1.0
- LibreDOS
- Little John's Windows
- Live PocketOS
- Lyre OS 1.0
- MAC/X
- MacOS 30
- MacOS Condor
- MacOS Vinson
- Mac OS 9 for Legacy Platforms
- Mac OS NeXTSTEP
- Magnesium 1.0
- Magnesium 2.0
- Magnesium 2.1
- Magnesium 3000
- Magnesium 4000
- Magnesium 4001
- Magnesium 5
- Magnesium Exon
- Mainframe Systems
- MandoorCom OS
- MandoorCom OS 1.0
- MandoorCom OS 2.0
- Mandoor Corporation
- Mandoor Corporation/CPU Lines
- Mandoor Corporation/CPU Lines/Palatnium/X5990
- Mandoor Corporation/CPU Lines/Platinium 5 5670
- Mangus Technologies
- MarcoOS Corporation
- Megasoft
- Meta Corporation
- Meta Portable
- Microcom
- MicrosoftGUI
- Microsoft (Reality)
- Microsoft Avian
- Microsoft Azure ∞
- Microsoft Choacury
- Microsoft Coffee
- Microsoft Dozenal Insider Preview
- Microsoft GEN
- Microsoft Neptune Revision 2004
- Microsoft Operating System for IBM Computers
- Minisoft
- Modular Windows 2.0
- MuOS
- Multitech, Inc.
- NLUIAOS Touch
- NTD Technology
- NataliaKOS 3
- Netium (operating system)
- NitrOS 16
- OS/2 Uta
- OS/2 Warp 5
- OS/362
- OS/3 Warp 1.0
- OS/3 Warp 2.0
- OS/4 Warp 1.0
- OS/4 Warp 2.0
- OS/5 Warp 1.0
- Odyssey server family
- One OS
- One UI 9
- OpenNT
- OpenNT 2006
- OpenSeal
- OpenSeal 1.0
- OpenSys
- OperaOS Mini Mobile
- Operating system mockups
- Paracomm Electronics, Inc.
- PhoenixOS
- Phoni Technology
- Plan 9 Extended Edition
- PocketPC 95
- PocketPC 98
- Polaris OS (2994)
- PrismOS 1.0
- Quantum kernel
- Real Linux Operating Systems
- Real Mobile Operating Systems
- Real Unix Operating Systems
- Real Windows Operating Systems
- Real macOS Operating Systems
- RedStarOS 5.0
- ResurrectionOS
- Resurrection Incorporated
- RevibeOS
- ReviveOS
- ReviveOS 1.0
- ReviveOS 2.0
- ReviveOS 3.0
- ReviveOS 4.0
- ReviveOS 5.0
- ReviveOS 7
- ReviveOS 8
- ReviveOS 9
- ReviveOS Quantum
- ReviveOS Quantum/build 1335
- ReviveOS Ultranium
- ReviveOS X
- RisaffOS 12.1
- Risaff Technologies(Company)
- River
- River 13
- Roblox OS
- RolcataOS 12
- Sasti
- Screen of The Serpent's Wrath
- SealOS Workstation 1.0
- SeeDOS 1.0
- SeeOS+ 9.2
- See Inc.
- Silverstar-Tempest Group
- Skyblue
- SkyblueOS 3.3
- Skyblue Graphical Manager 0.01 (Prototype 0.01)
- Smartsoft
- Softonium Corporation
- Spurdows xDDDDDDDD
- StoneOS
- SunOS
- Sunbird UI 7.0
- System Software for Apple III
- TCR Manager
- TTZS's Windows Alt Timeline
- Tehachapi BSD
- TesserGUI
- Tethys
- TfosorciM
- The ALXERS Graphical Manager 1.x
- The ALXERS Graphical Manager 2.x
- The ALXERS Graphical Manager 6.x
- The Mockupverse Wiki
- Traum Corporation
- UNIX System IX
- UltraDOS
- Ultraviolet
- Unified Shell
- Unison Tech Inc.
- United States Government System (USID)
- UnixWare 8
- Vanura 3000BC
- VertexOS 1.0
- VibraniumOS
- VibraniumOS 2
- VibraniumOS 3
- VibraniumOS 4
- VibraniumOS 5
- Viewfinder Corporation
- Visual history of Minderian WNRs
- WaterOS
- Widus ohio
- WikimediaOS
- WinDOS
- WinKernel
- Windo (character)
- Windows/486 2.11
- Windows: Rodrick Edition
- Windows: Wimpy Edition
- WindowsScape
- Windows '01
- Windows -3.30
- Windows 1.5
- Windows 10(dozenal series)
- Windows 10.1
- Windows 10.5
- Windows 10.5X
- Windows 10000
- Windows 10X team vNext
- Windows 10Y
- Windows 10 LE
- Windows 10 MobileShell
- Windows 10 Release Preview
- Windows 11.5
- Windows 111
- Windows 11X
- Windows 11X 23H1
- Windows 11 Mobile
- Windows 12
- Windows 12.1
- Windows 12.1 Mobile
- Windows 12X
- Windows 12 (RStone32)
- Windows 12 Mobile
- Windows 13
- Windows 13X
- Windows 14
- Windows 15
- Windows 16
- Windows 17
- Windows 18
- Windows 19
- Windows 1↊
- Windows 1↋
- Windows 2.03 TrueQuality
- Windows 2.2
- Windows 20
- Windows 2001
- Windows 2002 Legacy
- Windows 2003
- Windows 2004
- Windows 2005
- Windows 2008
- Windows 2008/Development of Windows 2008
- Windows 2009
- Windows 2010
- Windows 2011
Skip to content