Grisbi is personal accounting software that can manage multiple accounts, multiple currencies, and multiple users. It manages third parties, expenditures and receipts categories, and also budgetary lines, financial years, and other information. It is adapted for personal use as well as for associations.
TkKasse is a cash desk (POS) software designed especially for use in restaurants. It runs on ordinary PCs that use cheap standard components, aside from a POS printer. It supports multiple simultaneous waiters, bills, and screens. This software has been tested and optimized on real waiters at a restaurant in Harz Mountains, Germany.
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.
AqFinance is the successor to QBankManager. It is a graphical accounting application based on double-entry accounting. The GUI uses the FOX toolkit. The package contains AqFinance (the GUI application), AqFinance-CLI (a command line tool to manipulate and export the AqFinance database), and AqBanking-CLI (a command line tool for online banking tasks). It supports all online banking protocols provided by AqBanking (currently HBCI and OFX DirectConnect). A version supporting EBICS (a German online banking protocol) is also available. AqFinance contains the latest versions of AqBanking, Gwenhywfar, and Libchipcard.