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 relational and transaction-based database system.
A simple tool to list expiring or expired X.509 certificates.