Quick Overview
- 1#1: Zammad - Zammad is a modern, open-source helpdesk system with ticket management, multichannel support including email, chat, and telephony integration.
- 2#2: osTicket - osTicket is a lightweight, free open-source ticketing system designed for handling customer inquiries and support requests efficiently.
- 3#3: Znuny - Znuny is an enterprise-grade open-source service management suite forked from OTRS, offering advanced ticketing, ITIL processes, and CMDB features.
- 4#4: GLPI - GLPI is a comprehensive open-source IT service management platform with helpdesk ticketing, asset management, and inventory tracking.
- 5#5: FreeScout - FreeScout is an open-source alternative to Help Scout, providing a clean interface for email-based customer support and ticket management.
- 6#6: UVdesk - UVdesk is a PHP-based open-source helpdesk software focused on multichannel ticketing and e-commerce customer support.
- 7#7: Request Tracker - Request Tracker (RT) is a mature, flexible open-source ticketing system used for issue tracking and helpdesk operations.
- 8#8: Helpy - Helpy is a Ruby on Rails open-source helpdesk platform with knowledge base, forums, and live chat capabilities.
- 9#9: iTop - iTop is an open-source IT operations portal combining CMDB, ticketing, and service management for helpdesk workflows.
- 10#10: Faveo Helpdesk - Faveo Helpdesk is an open-source customer support platform with ticket automation, SLA management, and multi-brand support.
Tools were selected based on rigorous evaluation of features, technical quality, ease of use, and long-term value, ensuring a balanced ranking that meets both niche and broad usability requirements.
Comparison Table
This comparison table examines leading open-source help desk software, featuring Zammad, osTicket, Znuny, GLPI, FreeScout, and more, to guide users in selecting the ideal solution for their support workflows. Readers will discover key features, practical use cases, and distinguishing strengths of each tool, enabling informed choices for efficient customer assistance management.
| # | Tool | Category | Overall | Features | Ease of Use | Value |
|---|---|---|---|---|---|---|
| 1 | Zammad Zammad is a modern, open-source helpdesk system with ticket management, multichannel support including email, chat, and telephony integration. | enterprise | 9.5/10 | 9.6/10 | 8.8/10 | 10/10 |
| 2 | osTicket osTicket is a lightweight, free open-source ticketing system designed for handling customer inquiries and support requests efficiently. | enterprise | 8.1/10 | 7.7/10 | 6.8/10 | 9.7/10 |
| 3 | Znuny Znuny is an enterprise-grade open-source service management suite forked from OTRS, offering advanced ticketing, ITIL processes, and CMDB features. | enterprise | 8.7/10 | 9.2/10 | 7.5/10 | 9.8/10 |
| 4 | GLPI GLPI is a comprehensive open-source IT service management platform with helpdesk ticketing, asset management, and inventory tracking. | enterprise | 8.6/10 | 9.3/10 | 7.1/10 | 9.8/10 |
| 5 | FreeScout FreeScout is an open-source alternative to Help Scout, providing a clean interface for email-based customer support and ticket management. | specialized | 8.6/10 | 8.2/10 | 8.8/10 | 9.7/10 |
| 6 | UVdesk UVdesk is a PHP-based open-source helpdesk software focused on multichannel ticketing and e-commerce customer support. | specialized | 8.1/10 | 8.4/10 | 7.6/10 | 9.2/10 |
| 7 | Request Tracker Request Tracker (RT) is a mature, flexible open-source ticketing system used for issue tracking and helpdesk operations. | enterprise | 8.2/10 | 9.1/10 | 6.3/10 | 9.5/10 |
| 8 | Helpy Helpy is a Ruby on Rails open-source helpdesk platform with knowledge base, forums, and live chat capabilities. | specialized | 8.1/10 | 8.4/10 | 7.7/10 | 9.3/10 |
| 9 | iTop iTop is an open-source IT operations portal combining CMDB, ticketing, and service management for helpdesk workflows. | enterprise | 8.1/10 | 8.7/10 | 6.4/10 | 9.5/10 |
| 10 | Faveo Helpdesk Faveo Helpdesk is an open-source customer support platform with ticket automation, SLA management, and multi-brand support. | enterprise | 7.3/10 | 7.8/10 | 6.5/10 | 9.2/10 |
Zammad is a modern, open-source helpdesk system with ticket management, multichannel support including email, chat, and telephony integration.
osTicket is a lightweight, free open-source ticketing system designed for handling customer inquiries and support requests efficiently.
Znuny is an enterprise-grade open-source service management suite forked from OTRS, offering advanced ticketing, ITIL processes, and CMDB features.
GLPI is a comprehensive open-source IT service management platform with helpdesk ticketing, asset management, and inventory tracking.
FreeScout is an open-source alternative to Help Scout, providing a clean interface for email-based customer support and ticket management.
UVdesk is a PHP-based open-source helpdesk software focused on multichannel ticketing and e-commerce customer support.
Request Tracker (RT) is a mature, flexible open-source ticketing system used for issue tracking and helpdesk operations.
Helpy is a Ruby on Rails open-source helpdesk platform with knowledge base, forums, and live chat capabilities.
iTop is an open-source IT operations portal combining CMDB, ticketing, and service management for helpdesk workflows.
Faveo Helpdesk is an open-source customer support platform with ticket automation, SLA management, and multi-brand support.
Zammad
enterpriseZammad is a modern, open-source helpdesk system with ticket management, multichannel support including email, chat, and telephony integration.
Advanced workflow automation using the Zeebe engine for complex ticket routing and processes
Zammad is a robust open-source helpdesk and customer support platform that unifies tickets from multiple channels including email, chat, web forms, social media, and telephony into a centralized system. It offers advanced features like automated workflows powered by Zeebe, a comprehensive knowledge base, detailed reporting, and real-time collaboration tools for efficient team management. Ideal for self-hosting, it provides a modern web interface with extensive customization options for organizations of all sizes.
Pros
- Fully open-source with no licensing costs
- Seamless multi-channel support and automation
- Powerful reporting, analytics, and customizable dashboards
Cons
- Self-hosting setup requires technical expertise
- Primarily community-driven support
- Mobile app lacks some desktop features
Best For
Teams and organizations seeking a scalable, customizable open-source helpdesk without vendor lock-in.
Pricing
Free open-source self-hosted version; cloud hosting starts at €5 per agent per month.
osTicket
enterpriseosTicket is a lightweight, free open-source ticketing system designed for handling customer inquiries and support requests efficiently.
Sophisticated email piping that automatically converts inbound emails into structured tickets with threading and attachments
osTicket is a free, open-source help desk ticketing system designed to streamline customer support by converting emails, web forms, and phone requests into manageable tickets. It features ticket assignment, queues, automated responses, custom fields, and basic reporting to help teams organize and resolve issues efficiently. With a focus on scalability for small to medium teams, it supports multilingual interfaces and department-based routing.
Pros
- Completely free and open-source with no licensing fees
- Highly customizable via plugins, themes, and API integrations
- Robust email piping and multi-channel ticket intake
Cons
- Outdated and clunky user interface
- Steep learning curve for setup and advanced configuration
- Lacks native live chat, AI automation, or modern collaboration tools
Best For
Tech-savvy small to medium-sized teams needing a cost-free, customizable ticketing solution without premium features.
Pricing
100% free open-source software; optional paid add-ons, hosting, and enterprise support available.
Znuny
enterpriseZnuny is an enterprise-grade open-source service management suite forked from OTRS, offering advanced ticketing, ITIL processes, and CMDB features.
Dynamic Package Manager enabling thousands of community extensions for tailored functionality without custom coding
Znuny is a robust open-source help desk and IT service management platform, forked from OTRS, offering comprehensive ticketing, queue management, and customer support workflows. It supports multi-channel ticket intake (email, phone, web), automated routing, SLA monitoring, and advanced reporting for ITIL-compliant operations. Highly modular and extensible, it's designed for organizations needing scalable, customizable solutions without licensing costs.
Pros
- Enterprise-grade features like ITIL support and process automation at no cost
- Extensive package ecosystem for easy customization
- Scalable for high-volume ticketing with strong reporting tools
Cons
- Complex installation and configuration requiring technical expertise
- Interface feels dated compared to modern SaaS alternatives
- Ongoing maintenance and self-hosting demands server resources
Best For
Mid-to-large organizations with IT teams seeking a highly customizable, free open-source help desk for complex workflows.
Pricing
Fully free and open-source (AGPLv3); optional paid enterprise support, hosting, and training available.
GLPI
enterpriseGLPI is a comprehensive open-source IT service management platform with helpdesk ticketing, asset management, and inventory tracking.
Deep integration of help desk ticketing with full IT asset and inventory management
GLPI is a free, open-source IT service management platform that excels as a help desk solution with integrated asset and inventory management. It enables efficient ticket tracking for incidents, requests, and changes, while also handling IT asset lifecycle from procurement to disposal. The software supports multi-tenancy, reporting, and a vast plugin ecosystem for customization.
Pros
- Comprehensive ITAM and ITSM in one platform
- Extensive plugin ecosystem for extensibility
- Strong community support and multilingual
Cons
- Dated and cluttered user interface
- Complex setup and configuration
- Steeper learning curve for non-technical users
Best For
Mid-sized IT teams needing a robust, self-hosted help desk with deep asset management integration at no licensing cost.
Pricing
Completely free open-source; self-hosted with optional paid support and plugins.
FreeScout
specializedFreeScout is an open-source alternative to Help Scout, providing a clean interface for email-based customer support and ticket management.
Modular marketplace for extensions, enabling easy customization like paid upgrades for conversations or automation without modifying core code
FreeScout is a fully open-source, self-hosted help desk and shared mailbox software designed as a lightweight alternative to Help Scout. It enables teams to manage customer support tickets through email integrations (IMAP/POP3), automate responses with rules, and create a basic knowledge base. With a modern, responsive interface and modular architecture, it supports unlimited agents and tickets without any licensing fees.
Pros
- Completely free and open-source with no limits on users or tickets
- Easy self-hosting on standard PHP/MySQL servers like shared hosting
- Intuitive Help Scout-like interface that's mobile-responsive
Cons
- Requires technical setup and ongoing server maintenance
- Advanced features like enhanced reporting need paid modules
- Lacks native integrations for telephony or live chat out-of-the-box
Best For
Small to medium teams seeking a customizable, zero-cost help desk solution they can self-host without subscription fees.
Pricing
Core software is 100% free and open-source; optional paid modules start at $29 one-time or $5/month.
UVdesk
specializedUVdesk is a PHP-based open-source helpdesk software focused on multichannel ticketing and e-commerce customer support.
Multi-brand helpdesk management, allowing a single installation to power separate support portals for different brands or clients.
UVdesk is an open-source helpdesk software built on Symfony that enables efficient customer support through multi-channel ticket management, including email, social media, and web forms. It features a robust knowledge base, automated workflows, and multi-brand support for handling multiple support portals from a single dashboard. Ideal for self-hosted deployments, it offers high customizability for teams needing scalable ticketing without vendor lock-in.
Pros
- Fully open-source community edition with no licensing fees
- Multi-brand support for managing multiple helpdesks
- Strong automation and workflow capabilities
Cons
- Initial setup and configuration can be complex for non-technical users
- User interface feels somewhat dated compared to modern SaaS alternatives
- Advanced reporting and integrations often require paid extensions
Best For
Small to medium-sized businesses or agencies needing a customizable, self-hosted open-source ticketing system for multiple brands.
Pricing
Free open-source Community Edition; Pro/Enterprise plans and hosted cloud options start at around $19/month with additional features and support.
Request Tracker
enterpriseRequest Tracker (RT) is a mature, flexible open-source ticketing system used for issue tracking and helpdesk operations.
Advanced Scrip system for creating custom ticket lifecycle automations and actions
Request Tracker (RT) is a mature, open-source ticketing system from Best Practical, primarily used for help desk, IT service management, and customer support operations. It provides robust features for tracking requests, managing workflows, and integrating with email systems to create and update tickets automatically. RT is highly extensible through custom fields, templates, and scrips, making it suitable for complex organizational needs.
Pros
- Highly customizable with scrips, extensions, and workflows
- Excellent email integration and automation capabilities
- Scalable for enterprise use with strong permissions and reporting
Cons
- Dated and clunky user interface
- Complex installation and configuration requiring Perl expertise
- Steep learning curve for administrators and end-users
Best For
Large organizations or IT teams requiring a highly customizable, scalable ticketing system for complex workflows.
Pricing
Core open-source version is free; commercial support, training, and hosted options available via Best Practical subscriptions starting at custom pricing.
Helpy
specializedHelpy is a Ruby on Rails open-source helpdesk platform with knowledge base, forums, and live chat capabilities.
Unified platform combining ticketing, knowledge base, and community forums for comprehensive self-service support.
Helpy is a fully open-source help desk platform designed for teams to manage customer support tickets across multiple channels like email, chat, and web forms. It includes a built-in knowledge base, community forums, and asset management, all within a modern, responsive interface. As a self-hosted solution built on Ruby on Rails, it emphasizes customization, data ownership, and scalability for growing support needs.
Pros
- Completely free and open-source with no licensing fees
- Integrated knowledge base and community forums for self-service support
- Highly customizable with modern UI and multi-tenant support
Cons
- Self-hosting requires technical expertise for setup and maintenance
- Documentation can be sparse for advanced customizations
- Relies on community support rather than dedicated enterprise assistance
Best For
Small to medium-sized teams or organizations wanting a customizable, self-hosted help desk without subscription costs.
Pricing
Free open-source self-hosted edition; optional cloud hosting starts at $25/month per agent.
iTop
enterpriseiTop is an open-source IT operations portal combining CMDB, ticketing, and service management for helpdesk workflows.
Integrated CMDB that links tickets, assets, and services for holistic IT visibility and impact analysis
iTop is an open-source IT Service Management (ITSM) platform from Combodo that excels as a help desk solution with robust ticket management, incident tracking, and automation workflows. Built around a comprehensive Configuration Management Database (CMDB), it supports ITIL-compliant processes including problem management, change management, and service catalogs. Highly customizable and self-hosted, it's ideal for IT teams needing integrated asset and service management without licensing costs.
Pros
- Comprehensive ITSM features with strong CMDB integration
- Fully open-source and highly customizable via extensions
- Advanced automation, reporting, and ITIL compliance out-of-the-box
Cons
- Steep learning curve and complex initial setup
- Dated user interface that feels clunky
- Limited mobile support and community resources
Best For
Mid-sized IT teams or organizations seeking a free, full-featured ITSM suite with deep CMDB capabilities for structured service management.
Pricing
Completely free under AGPL license; optional paid support subscriptions and professional services from Combodo starting at around €500/year.
Faveo Helpdesk
enterpriseFaveo Helpdesk is an open-source customer support platform with ticket automation, SLA management, and multi-brand support.
Advanced SLA management with automated escalations and breach notifications
Faveo Helpdesk is an open-source, self-hosted help desk software built on PHP and Laravel, designed to manage customer support tickets from multiple channels including email, web forms, social media, and chat. It offers essential features like automated ticket routing, SLA management, knowledge base, canned responses, and detailed reporting for efficient support workflows. Suitable for businesses seeking a customizable, cost-free alternative to proprietary help desk solutions with full control over their data.
Pros
- Fully open-source under AGPLv3 with no licensing fees
- Multi-channel ticket ingestion and robust automation rules
- Customizable via API, plugins, and themes
Cons
- Requires server setup and technical expertise for installation
- User interface feels dated and less intuitive than modern SaaS tools
- Documentation and community support are limited
Best For
Small to medium-sized businesses with in-house IT teams needing a free, self-hosted help desk solution.
Pricing
Core open-source version is free; professional on-premise and cloud editions start at around $59/month with advanced features and support.
Conclusion
The top 10 tools showcase a range of robust solutions, with Zammad leading as the top choice, offering modern multichannel support and seamless ticket management. osTicket, a lightweight option, excels in efficient inquiry handling, while Znuny, an enterprise-grade suite, caters to complex workflows with advanced ITIL processes. Each tool addresses specific needs, ensuring a fitting solution for various users.
Don’t miss out—try Zammad, the top-ranked tool, to experience streamlined support and multichannel integration firsthand.
Tools Reviewed
All tools were independently evaluated for this comparison
Referenced in the comparison table and product reviews above.