SemperWiki is an open-source semantic personal Wiki for Gnome. It offers the usability of personal Wikis and the improved retrieval and querying of semantic Wikis.

Personal Wikis are simple applications that allow you to collect your information in a set of related notes. The system helps you to write your thoughts down instantly, as it is always available and easy to use. Semantic Wikis consist of pages that can be annotated with semantic information. The system can then help you find and retrieve relevant information better (because it understands a bit better what each page is about).

SemperWiki combines the features of these Wiki extensions and provides a semantic personal Wiki: the power of semantics on your personal Desktop. It focuses on usability and gratification. Usability means that it is never in your way, most things happen automatically and instantly, and everything is straightforward. Gratification means that every piece of semantic information that you enter is rewarded: you see instant changes in the intelligent navigation possibilities that are computed from this semantic information. You can also query all information in the system.