Mautic

The leading open-source marketing automation and campaign platform.

Mautic is an open-source marketing automation platform written in PHP on the Symfony framework, positioned as an alternative to HubSpot and Marketo. It manages contacts, segments, landing pages, email campaigns, drip workflows, lead scoring, and multi-channel campaign builders with a visual flow editor. It is notable for being self-hostable, deeply extensible via plugins, and exposing a full REST API for contacts and campaigns.