Active Collab is project collaboration system. It's a commercial product developed using PHP and MySQL.
Active Collab was originally released as an open source alternative to Basecamp in July 2006. One year after that, original author of the project founded a company and released a new, rewritten version of the application (Active Collab 1.0, in October 2007). New version was released under the terms of proprietary license, but customers still received full source code of the application.
Original open source version continues to live through various forks (Project Pier, Feng Office etc).
Active Collab offers JSON over HTTP API that allows developers to read, update and delete the data within the system. It also features webhooks, so external systems can receive notifications when events happen in Active Collab.
System Requirements for Active Collab 5 are:
- PHP 5.6 or newer
- MySQL 5.5.3 or newer
- Web server capable of running PHP
Application itself is platform independent and runs well on Windows, Linux, Mac etc powered servers.