CRM+ is user-friendly, easy-to-understand customer relationship management (CRM) software for getting your company's data centralized and organized. It supports the invoicing, contact management, project management, business history, business tasks, reminders, knowledge base, and many more customer related functions. It was built using the FileMaker database engine. It is available in a single-user edition and a network-capable multi-user edition.
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.
MEVEO is a billing system for mediation, rating, invoicing, payment, dunning, and composition. It is adapted to the following situations: batch processing of thousands of invoices per month (or much more), complex price plans, real time rating, and re-rating, automatic provisionning through an API, multi-format CDRs, and pre/post-invoicing reports.