DomainBrain is a handy tool for Mac OS X that helps webmasters and web designers keep track of server and login information for websites they maintain.

Riak combines a decentralized key-value store, a flexible map/reduce engine, and a friendly HTTP/JSON query interface to provide a database ideally suited for Web applications.

Infochimps lets you discover, share and sell data of any size, topic, or format.

Together lets you keep everything in one place. Text, documents, images, movies, sounds, web pages and bookmarks can all be dragged to Together for safe keeping, tagged, previewed, collected together in different ways and found again instantly.