CL Add-on Dev
BuildYourMap.com looks like it could be useful for organizing also RPG campaigns:
http://www.buildyourmap.com/The InfoRapid KnowledgeBase Builder is an excellent tool for Knowledge Management. You can save text documents and web pages with all formattings and links in your knowledge base and perform a full text search in it. Since every document is attached as a text note to a mindmap item, you can organize them perfectly in a large mindmap. This mindmap is browsable, so you will never lose perspective even with thousands of documents. All items are stored in a reliable local SQLite database. The app includes many other outstanding features such as the automatic creation of mindmaps from text documents, the import of Wikipedia articles and Twitter tweets into your mindmap and much more. You can even export your knowledge base as a formatted html document.