libgeier is a library to send gathered tax declarations data to the German inland revenue offices (using the Elster2/Coala-approach). It is capable of validating, encrypting, digitally signing, and sending the data, which has to be supplied as an XML tree. It can generate transmission protocols for you. A small command line client is included.
firstname.lastname@example.org is a wiki-based product catalogue and market place. This means you can add or change product descriptions, make comments on products, add points-of-sale for these products, contact other market participants, and much more. Unlike other known market places, this one is built using a wiki. In a wiki, everyone may change everything. A new wiki software has been programmed to fit the special needs of the structure of products.