The Roguelike Gallery is a living museum of roguelike games. A collection of historical roguelikes is being restored and made available for play on this server.
Using the Web app, you can try the games in your Web browser.
You can also play by ssh to rlgallery.org. The username is "rodney", and "yendor" is the password.
For more details, check the blog.
Jan. 12, 2015: Some bugs in the Web app have been fixed.
Mar. 31, 2014: A few bugs have been fixed. The length limit for player names has been increased from 10 characters to 20.
Jan. 10, 2014: Statistical charts have been added to the scores section.
Oct. 5, 2013: All the games have been updated to fix various bugs. Super-Rogue now supports arrow keys. Games can be downloaded.