Arena is a web browser developed by the W3C for testing support for HTML 3 and Cascading Style Sheets.
The W3C halted work on the Arena browser, and switched to the Amaya browser as their new testbed. On 17 February 1997, Yggdrasil Computing took over the role of developing the browser. Development seems to have stopped in late 1998, with the final release being on 25...