Aggrevator is an RSS/Atom aggregator that uses a MySQL 4.1 database for storage. The main advantage of Aggrevator is that it is scalable. It has been tested successfully with 4000 simultaneous feeds from a variety of sources. Once your database is set up, you can connect to it from any running instance of Aggrevator (with a valid username and password), so you no longer have to manually synchronize different installations of the same aggregator.
KwikWiki is a Web application that enables you to set up a Web site where anyone can edit the content of a page or add new pages. The system will track things like recent changes and indicate if a link is dead or not. It uses a very simple notation to create links and lists and to format text. KwikWiki also keeps every version of a page that is saved so you don't have to worry about losing old data. KwikWiki also has a fast and scalable full-text search functionality that does things like show all the pages which are related to the current page.