EmuOS is a nostalgic simulation of Windows that you can view and run from your browser. It offers a screen of old Windows with several built-in classic games and applications.
If you want to relive your youth through old liturgies, you can go to EmuOS. It is an online repository of old games and software that you can use through your web browser. EmuOS has popular antique games like Pong, Pac-Man, Pikachu Volleyball but also programs like Winamp (along with songs), Quake 1, 2, 3, paint, visual studio,.
EmuOS has a few different themes to match the retro feel, including Windows 95, Windows 98 and Windows ME. EmuOS is part of Emupedia.
The page Emupedia GitHub describes its purpose:
The purpose of Emupedia is to serve as a non-profit resource, hub and community for those who are primarily interested in video game maintenance and aim at collecting, archiving and maintaining digital games and software to make them available online and accessible through a secure user interface, which simulates many retro operating systems for educational purposes.
Inside EmuOS, you can bounce a ball back and forth on Pikachu Volleyball, play Pong Rally, remember pac-man or relax with Paint painting. You can even run Winamp with songs of the season.