What's OpenBase ???

Hi all,

just discovered a mysterious "OpenBase" folder inside my Applications folder, containing:

OpenBase Manager
OpenBase Updater
OpenISQL GUI

openbase.com/
What's that supposed to be and how did I get it????

Generally, I'm pretty careful when it comes to application installers.
The only things that came with an installer were

Tiger, Apple Developer Tools, GNU Pascal (Pascal extension to XCode),
a bunch of Gerben Wierdas's iPackages related to Tex/Latex
Cisco VPN Client, Automator script:
http://www.apple.com/downloads/macosx/automator/downloadurlsaspdfs.html

Any Idea?