Open-source CRM software

A modern open-source CRM you can self-host and extend through its API.

A self-hosted CRM for managing leads, contacts, sales opportunities, marketing campaigns and support cases, with a PHP REST backend and a single-page web frontend.

An open-source CRM for sales, marketing and customer service that you host on your own PHP and MySQL-compatible stack, maintained as two lines: SuiteCRM 7 and SuiteCRM 8.