DataIO is a web service that allows you to store data. It then allows you to query for the data in many different ways. This website also hopes to eventually be a tutorial for the different graphing libraries on the web.
The BuildBot is a system to automate the compile/test cycle required by most software projects to validate code changes. By automatically rebuilding and testing the tree each time something has changed, build problems are pinpointed quickly, before other developers are inconvenienced by the failure.