Be sure to read the license first. You'll prolly need the Lua libraries installed. You can get Lua from http://www.lua.org/. If you're a Debian fan, Daniel Silverstone has packaged colloquy, and it is available in sarge and sid.

• colloquy 1.35 (98kB)
• colloquy 1.27 (93kB)
• colloquy 1.26 (100kB)
• colloquy 1.20 (74kB)
• colloquy 1.19 (74kB)
• colloquy 1.17 (98kB)
• colloquy 1.16 (95kB)
• colloquy 1.15 (130kB)
• colloquy 1.05 (110kB)
• colloquy 1.00 (108kB)
• colloquy 0.90 (108kB)