The best open source alternative to Jira Service Management is Zammad. If that doesn't suit you, we've compiled a ranked list of other open source Jira Service Management alternatives to help you find a suitable replacement.
Jira Service Management alternatives are mainly Customer Communication Platforms but may also be Helpdesk Software. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Jira Service Management.
Zammad is an open-source helpdesk software that centralizes customer communications and helps deliver great service experiences efficiently.

Zammad is a powerful open-source helpdesk and ticketing software designed to streamline customer service operations. Key features and benefits include:
Zammad helps businesses of all sizes provide exceptional customer support, from small teams to large enterprises. The software is highly scalable and can be deployed on-premises or used as a cloud service. With its user-friendly interface and robust feature set, Zammad empowers support teams to work more efficiently and deliver better customer experiences.