alice_invoice provides a simple interface (in Ruby) to download invoices and corresponding digital signatures from the German ISP Alice.
NoAPI is a command line tool for using the APIs of Norfello's various services. It makes it easy to automatically send electronic invoices and mail through postita.fi and query information about Finnish companies through BizSearch.
A native XML database and application platform.
A fully-featured launchd front-end for managing and debugging system and user services.