Virtuoso is a scalable cross-platform server that combines Relational, Graph, and Document Data Management with Web Application Server and Web Services Platform functionality.
The melody manager is a web application which indexes music and makes it accessible over the internet. Music is organised into artists, albums and playlists. Eventually the system will expand the users music collection based on their likes and dislikes.
Relational storage for tagged documents
Restad is an indexing-querying tool for tagged documents. It uses a relational database for storage and querying. See the last news on the blog : https://sourceforge.net/p/restad/blog/ The Ruby first prototype can be found there : https://github.com/ymoreau/Restad
Spider is web crawler written in the Java.Based on an Regular expression string the spider parses the internet for web pages matching this string and stores it in an MYSQL database.
An bot to index and cataloge web by internal relevance system based in hipertextual.