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The Best Open-Source Alternatives to Kayako

Are you looking for a free or self-hosted alternative to Kayako? In 2026, avoiding expensive proprietary software subscriptions is easier than ever. The open-source community has built excellent privacy-friendly tools within the Customer Support ecosystem. Currently, there are 4 active replacements available, with GLPI being one of the most prominent selections.

Quick Comparison: Kayako vs. Open Source

Full comparison: Kayako vs. GLPI →
CriteriaKayakoOSS Replacements
Pricing modelPaid / Monthly Fees100% Free / Self-Hosted
Data ControlThird-party ServersFull Ownership & Privacy
CustomizabilityRestricted by VendorUnlimited (Modify Codebase)

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GPL-3.0

GLPI is a comprehensive, web-based IT and asset management system that helps organizations streamline their equipment inventory, track tickets, and monitor IT service delivery, all while ensuring the security and control of sensitive data. As a privacy-friendly alternative to Kayako, GLPI serves as a robust, customizable, and open-source solution for managing IT services with complete transparency and data ownership.

⭐ 6,207 Stars
šŸ“ 1,766 Forks
ā— 0 Open Issues
šŸ·ļø GPL-3.0
AGPL-3.0

Zammad is a comprehensive, feature-rich ticketing system and help desk software that empowers organizations to streamline customer support and issue tracking, while prioritizing user data confidentiality and security. As a free and open-source alternative to commercial solutions like Kayako, Zammad offers an unparalleled level of control and customization, ensuring that customer data remains entirely in the hands of its administrators.

⭐ 5,821 Stars
šŸ“ 1,025 Forks
ā— 0 Open Issues
šŸ·ļø AGPL-3.0
GPL-2.0

"osTicket is a free, open-source help desk and ticketing system that allows businesses and organizations to efficiently manage customer queries and support requests in a secure, scalable, and highly customizable environment. By providing a powerful, feature-rich alternative to commercial solutions like Kayako, osTicket ensures that users maintain complete control over their data while enjoying robust support tools."

⭐ 3,839 Stars
šŸ“ 1,827 Forks
ā— 0 Open Issues
šŸ·ļø GPL-2.0
AGPL-3.0

Feng Office is a comprehensive, open-source enterprise collaboration platform that allows teams to streamline productivity, manage projects, and store sensitive information securely within a self-hosted solution, free from the privacy concerns associated with cloud-based services. As a Kayako alternative, Feng Office offers a robust, customizable, and private replacement for customer service software, empowering organizations to maintain control over their data and operations.

⭐ 106 Stars
šŸ“ 65 Forks
ā— 0 Open Issues
šŸ·ļø AGPL-3.0

Frequently Asked Questions

What is the best open source alternative to Kayako?

Based on GitHub community data (including star count and fork activity), GLPI stands out as one of the most reliable open-source replacements for Kayako today.

Why should I use an open-source replacement instead of Kayako?

Switching to an open-source solution ensures complete data sovereignty, protects your software environment from sudden vendor price hikes, and gives you full transparent control over your tech-stack metadata.

Top Open-Source Alternatives to Kayako in 2026