description: > Discover the best open-source helpdesk software solutions for small businesses. Free, flexible, and efficient – optimize your customer service with these support ticket systems.
The Best Open-Source Helpdesk Software Solutions for Small Businesses
In an era of increasing service demands, businesses, authorities, and support teams are looking for flexible, cost-effective, and secure ways to efficiently handle customer inquiries. Open-source ticketing systems offer precisely that: license-free software with full access to the source code, an active community, and countless integration and expansion possibilities.
In this comprehensive comparison, we take a look at the best-known solutions – OTOBO, Znuny, OTRS (Community Edition), and Zammad – and introduce other relevant systems like osTicket, GLPI, and KIX. We analyze features, usability, integrations, hosting options, AI features, and much more.
Whether it's a small business with few support staff or a large IT service desk with complex workflows: this guide shows which open-source ticketing system fits your requirements – and how to successfully implement it. We also incorporate modern AI solutions like Open Ticket AI to elevate ticket classification, prioritization, and automation in the helpdesk to a new level.
What is Open-Source Helpdesk Software?
Open-source helpdesk software offers businesses a flexible and customizable solution for effectively handling customer inquiries and technical issues. It is characterized by its free access to the source code, allowing businesses to adapt the software to their specific requirements.
Benefits of Open-Source Helpdesk Software
- 💲Cost Savings: As the software is available for free, there are no licensing fees.
- Flexibility: The source code can be adapted to individual needs.
- Scalability: Open-source solutions can be easily expanded as the business grows.
- Security: The open source code allows the software to be reviewed and optimized for security vulnerabilities.
The Best Open-Source Ticketing Systems
Here are some of the best open-source ticketing systems known for their reliability and adaptability:
1. OTOBO

OTOBO is a robust and feature-rich open-source support ticket system specializing in IT Service Management (ITSM). It offers a wide range of features such as automation, email integration, and self-service portals, making it an ideal choice for businesses of all sizes.
Key Features
- Integrated knowledge base
- Powerful ticket automation
- Customizable workflows
2. osTicket

osTicket is one of the most widely used open-source helpdesk ticketing systems. It is particularly popular with small and medium-sized businesses and offers an intuitive user interface as well as numerous extensions for additional features.
Key Features:
- Email and web form integration
- Customizable ticket fields
- Customer self-service portal
3. GLPI

GLPI is a comprehensive open-source helpdesk software that not only offers ticketing features but also a complete * asset management*.* GLPI is ideal, especially for companies looking for an all-encompassing solution.
Key Features:
- IT asset management
- Helpdesk ticketing
- Support for ITIL standards
4. Zammad

Zammad is a modern and user-friendly open-source service desk software. It is excellent for businesses seeking an easy-to-use yet powerful platform.
Key Features:
- Multichannel support (email, social media, chat)
- Time tracking and reports
- Customizable dashboards
Open Ticket AI – AI for Ticket Classification & Automation
Automate ticket assignment (queue, priority, language), generate summaries, and create synthetic training data on demand – integrable with OTOBO, Znuny, and Zammad. Find more information, demos, and API here: https://open-ticket-ai.com
Free Helpdesk Software for Small Businesses
For small businesses with limited IT resources, open-source solutions offer the perfect combination of functionality and cost-effectiveness. Some of the best free helpdesk software solutions include:
- osTicket: Ideal for businesses with few support staff.
- Zammad: Offers advanced features useful for growing businesses.
- OTOBO: Excellent for businesses seeking an ITSM-compliant support system.
Why Open-Source?
Many companies choose open-source support desk solutions because they represent excellent customer service software for small businesses. Especially for companies looking for an open-source ticketing system based on PHP and MySQL, solutions like * osTicket* and OTOBO are an excellent choice.
Conclusion
The choice of the best open-source helpdesk software heavily depends on individual requirements. Whether it's a simple ticket system or a comprehensive service desk solution – the open-source systems presented here offer the right solution for every need.