Carracho Server 1.0b8 (Mac)
Source: Carracho Communications
Carracho Server turns almost any Internet-connected Macintosh into a powerful chat, news, and file server based on the Carracho protocol. The small memory requirement (less than 2MB) and the multitasking abilities allow you to run a Carracho server in the background while working with your regular applications. Features of this server include chatting, news, and file distribution.