osTicket is a widely-used open source support ticket system.
GLPI (Gestionnaire Libre de Parc Informatique) is a free, open-source IT Service Management (ITSM) platform used for IT asset management, helpdesk, and service desk operations.
FreeScout is the super lightweight and powerful free open source help desk and shared inbox written in PHP (Laravel framework).
Chaskiq is an messaging platform for marketing, support & sales
Delightful customer relationships at scale.
Oneploy
