DomotiGa (home automation software)

DomotiGa is an Open Source Home Automation Software for Linux.

You can use it to read and log all kinds of sensor values, for example from Oregon's weather sensors. It can detect motion and schedule lights/applicances for you using A10/X10 devices. Let it send you e-mails and tweets on event triggers or scan barcodes for a grocery list, log your phonecalls, take camera snapshots when postal mail is delivered or doors are opened, and much more ...