XWiki is a professional wiki that has powerful extensibility features such as scripting in pages, plugins and a highly modular architecture.
Limited extensions or plugins available. Some custom programming may be necessary.
User-friendly and easy to use, and offers easy management of content and data, with a minimal learning curve. No prommaning knowledge is necessary.
Has a smaller active community. Limited support is available either for free or as a paid service. Adequate documentation is available.