"Many years ago when Datamation first starting making lists of open source software, we sometimes found it tough to come up with 50 or even 25 quality apps in a particular category. Now it's more often the case that we have so many good candidates that we leave some of the slightly less mature options off.
"That's certainly the case when it comes to open source communications software. We found literally hundreds of open source apps designed to help users communicate via audio, text, or video. We narrowed it down by picking the apps that offer the most viable alternatives to popular commercial communications tools.
"The apps that remain give you a good idea of the depth and quality of open source communication apps available today. The list includes options aimed at individuals, small businesses and large enterprises, and it runs the gamut from blogging software to e-mail/groupware solutions to Web page design.
"So without further ado, here are 58 open source replacements for popular commercial communications software:"