Atari is a brand and company name that was formed on 1972-06-28, but has since gone through so many bankruptcies, mergers, and restructurings that it's difficult to call it a single company any more. Despite that fact, it is one of the pioneers of the video game industry creating many important arcade games, video game consoles, and home computers.
I learned about Atari around 1985 when my family acquired a used Atari 2600 from a garage sale. Though I loved the console and our collection of games, it became little more than a paper weight after my brother and I got a Nintendo Entertainment System. I remember first reading about the release of the Jaguar in the mid-1990s and not even realizing that Atari still existed! Being a past fan of Atari, I was disappointed that the console flopped.
For information about games and software, see the various hardware pages.