GNU Radius is a RADIUS server and an accompanying set of monitoring utilities. It features MySQL and PostgreSQL interfaces for authentication and/or logging (the ODBC interface allows you to use almost any existing DBMS for that purpose), the ability to rewrite RADIUS requests from various NASs to normalize them to a more understandable format, and the ability to completely customize the behavior of RADIUS authentication and accounting based on NAS and user attributes.
Famflows is a program which tracks "flows" of energy and materials inside a household. It has an alternative approach from double entry accounting systems. In those systems (like gnucash or jgnash), the transactions are balanced in numeric value. In famflows, instead, the transactions are balanced in the conversion, but not in the numeric value.
Budgest is a Web application designed to manage budgets, for small to wide structures. Based on a double tree-structure (entity/nature), it allows the creation of annual or rolling slices budgets. It can import accounting data and allows the creation of dynamic reports to follow real-time evolution between account data and budget. A transverse view allows grouping of entities with no hierarchical relations (for example marketing departments of international companies). It supports users, groups, data versioning, and CSV import and export.
Jledger is a Java Business Accounting API that consists of invoicing, general ledger, stock/inventory control, and other business APIs that will assist Java developers in building business software with ease. It will take care of the business logic like accounting double entry, Stock Balance and management (FIFO), etc., and seamlessly integrate each part of business operation as a whole.
VATStuff provides a double-entry bookkeeping system with facilities to create purchase orders and invoices and to record costs and calculate VAT returns. VAT calculations are designed to meet UK regulations, and are not applicable to other states. Even for non-VAT registered companies, VATStuff enables you to record your transactions and produce invoices.
moneyGuru is a personal finance management application. It allows you to evaluate your financial situation so that you can make informed (and thus better) decisions. Most finance applications have the same goal, but moneyGuru's difference is in the way it achieves it. Rather than having reports which you have to configure (or find out which pre-configured report is the right one), your important financial data (net worth, profit) is constantly up-to-date and "in your face". This allows you to constantly make informed decision rather than doing so periodically.
Coffee Pot is an accounting system for coffee cups targeted for the data communication software group at the Aalto University. The Django-based server-side software includes a database system and a Web management interface. The client side software is customized for N810 tablets.
freeDiameter is a framework in C for supporting the Diameter Base Protocol (RFC3588). Diameter is a protocol for authentication, authorization, and accounting; it is the successor of RADIUS. Applications can be loaded as modules. Example applications include a Diameter EAP server, a Diameter SIP server, and Diameter Accounting.