WaterOS

WaterOS is an operating system developed by Sony, a heavy OS that weighs at least 25 GB for the latest version, 8.0, it contains more functionality than the Microsoft OS: Windows 10 the first release on October 23, 2002

History
Begin to end of support
 * WaterOS Alpha (2001)
 * WaterOS Beta (2002)
 * WaterOS 1.0 (2002-2014)
 * WaterOS 1.1 (2004-2014)
 * WaterOS 2.0 (2004-2017)
 * WaterOS 2.1 (2005-2017)
 * WaterOS 3 (2007-2017)
 * WaterOS 4 (2013-2022)
 * WaterOS 5 (2015-2022)
 * WaterOS 6 (2017-2022)
 * WaterOS 7 (2018-2023)
 * WaterOS 8 (2020-2026)
 * WaterOS 9 (2021-2026)
 * WaterOS Gamma (2022-2026)
 * WaterOS Delta (2023-2030)
 * WaterOS Epsilon (2024-2030)
 * WaterOS Wau (2025-2032)
 * WaterOS Zeta (2026-2030)
 * WaterOS Eta (2028-2035)
 * WaterOS Theta (2029-2031) (latest OS)