NexusOS

 (formerly SimpleOS) is an operating system developed by Tesseract Labs. It was first released in 2003.

History
nexusOS was forked from a different operating system called SimpleOS, after Tesseract Labs acquired the OS and shut down development. It was first released on November 2003. At first nexusOS was just a version of SimpleOS with a different GUI and some additional features and apps. Over time nexusOS kept getting more different than SimpleOS, including completely rewriting the kernel in version 3.0 (released in 2008) and switching the codebase to a more stabler one. The latest stable release is nexusOS 7 in 2019.

Features

 * Tesseract Wave web browser
 * Modern Desktop GUI
 * Safe and secure
 * Privacy in mind; doesn't spy on users

Versions

 * nexusOS 1 - Released 2003
 * nexusOS 2 - Released 2005
 * nexusOS 3 - Released 2008
 * nexusOS 4 - Released 2011
 * nexusOS 5 - Released 2014
 * nexusOS 6 - Released 2016
 * nexusOS 7 - Released 2019