25 Aug 2012 - Rainbow 2.2 is released. Improvements to video timing, graphics, speed (20% faster) and Trace output.
Rainbow is an 8-bit Atari Emulator and is a major rewrite of the old version 1.x. It features better emulation, real joystick support and full screen display. Diagnostic tools are also included.
Rainbow 2.2 for Windows 7, Vista and XP
You may also need to install Microsoft Visual C++ 2010 Redistributable Package (x86)
Atari Age - community for Atari fans, including forums
For more nostalgia, look at John Goodman's excellent Reminiscing:8-Bit Atari Games for a nice collection of screenshots.
Atari 5200 ROM images