In short: ProWiki is for all types of WikiApplications, especially for open communities. TWiki targets professional admins searching a wiki for their corporate intranet, closed, controlled and near in philosophy to CMS systems. -- HelmutLeitner

Similarities

Both systems are written in Perl.

Strengths and Weaknesses of TWiki

TWiki is a complex system, not easy to install and not easy to administrate.

TWiki is very features rich, especially when you consider its plugin system. You can choose from more than 200 plugins. But these plugins have to be installed separately, so you have a lot of work to build the system you want.

Side-by-side

Aspect TWiki ProWiki Comment CustomerType professional admins everyone, normal people TWiki is a tool for the purpose of larger corporations. The goal of the ProWiki development is to enable everyone to run a wiki. TargetApplication CorporateWiki all WikiApplications TWiki is for single wiki systems on a server. ProWiki is used to run many wiki systems on the same server. Administration hidden, done by admins visible to everone, done by contributors ProWiki is much more flexible than Twiki because of its concepts of WikiContextuality and WikiFractality

Although TWiki is focuses on the CorporateWiki and is tuned to corporate needs, ProWiki is probably the better choice, if you consider that wiki means to use new chances for open communication and collaboration. Using TWiki a corporation can hardly use this potential. -- HelmutLeitner