The best open source alternative to HelpDesk is Zammad. If that doesn't suit you, we've compiled a ranked list of other open source HelpDesk alternatives to help you find a suitable replacement. Other interesting open source alternatives to HelpDesk are: Freescout and Frappe Helpdesk.
HelpDesk alternatives are mainly Customer Communication Platforms but may also be Helpdesk Software or Email Platforms. Browse these if you want a narrower list of alternatives or looking for a specific functionality of HelpDesk.
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.
Open-source, developer-first platform for automated compliance, risk management, and built-in Trust Center.
Get started for freeSelf-hosted email management system with shared inboxes, automation, and powerful collaboration features for efficient customer support.

Freescout is a robust, open-source helpdesk solution designed to revolutionize your customer support workflow. With its self-hosted architecture, you maintain complete control over your data while enjoying enterprise-level features.
Key benefits of Freescout include:
Freescout empowers businesses of all sizes to deliver exceptional customer support while maintaining full control over their helpdesk infrastructure. Experience the freedom and flexibility of open-source without compromising on features or performance.
Frappe Helpdesk consolidates customer issues, automates workflows, and empowers self-service to boost agent productivity and customer satisfaction.

Frappe Helpdesk is an open-source ticketing system designed to streamline support operations and enhance customer experience. With its comprehensive features, it helps businesses manage customer inquiries efficiently while reducing costs.
Key benefits:
Frappe Helpdesk streamlines communication, prioritizes tasks, and provides clear visibility into ticket history. This leads to faster resolutions and improved team efficiency.
With features like SLA tracking, self-service options, and a user-friendly portal, customers enjoy a more transparent and responsive support experience.
As an open-source platform, Frappe Helpdesk offers robust functionality at a fraction of the cost of proprietary alternatives, making it an excellent choice for businesses of all sizes.