Open Source Invoice Management Software: MyClientBase

MyClientBase is a simple, intuitive, free and open source web based invoice management software developed specially for freelancers. Highly customizable options and features provide a powerful invoicing solution.

This invoice management software is written in PHP, on top of the excellent CodeIgniter framework. Built-in modularity gives developers a pathway to write custom modules.

It comes with a many comprehensive features including an informative dashboard, invoice management, client management & tax rate management modules.