Note: This project is abandoned! I don't contribute to this anymore. Also, wit.ai is shut down.
Finn is a hackable personal assistant, similar to Siri or Google Now, but for Nerds. He uses wit.ai to interpret your input and processes it using small plugins. Finn is written in CoffeeScript and published under the MIT license.
Finn is only a server. To use him conveniently, you need an adapter and a client. You could also install Finn (the server) on a small server-like machine in your house – for example on a Raspberry Pi – and run the client on your local computer.