HEATKEYS

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

CitrusDB is a web based customer care and billing software solution (CC&B) that uses PHP and a database backend (MySQL) to keep track of customer information, operational CRM, services, products, billing invoices and credit cards, and support inf...

Convergent Billing Software and Solutions by Agileco

Membership Software : PayPlans is an open-source Joomla membership, subscription and billing management software. Create a Subscription/Membership website for your online consultancy, club, services or community all based on the power and flexibility...

Find and compare the best billing and invoicing software. Compare invoicing solutions using features, user reviews, pricing, system requirements, and more.

The aim of the Open Source Software Directory is to list the best and most promising open source software available on the Internet.

AgileVoice empowers your company with all the features you need for running Voice over Internet Protocal business.

Open-source billing, CRM, trouble ticketing and automation software for ISPs, VoIP providers and online businesses.