Best Open Source & Free Ticketing Systems

An open source ticketing system can give a support team a real help desk without a monthly license fee. The trade-off is that “free” usually means you run the servers, apply the updates, and own the security. This guide compares the best-known open source and free ticketing tools, explains what you actually get, and shows when a hosted SMB tool pays off.

What “free” really means for a ticketing system

There are two different kinds of free. Open source software (like osTicket or Zammad) is free to download and self-host: the code is public, you can modify it, and there is no per-seat fee. Free tiers of commercial products are hosted for you but cap users, channels, or features until you upgrade.

Open source removes the license cost but adds operational cost: a server, a database, SSL, backups, and someone to keep it patched. If you have an IT person who enjoys that work, it can be a great deal. If you don’t, those hours are the real price. A ticketing system is closely related to a support ticket system in general, so it helps to know the basics before you choose.

The best open source & free ticketing systems

These are widely used, well-documented projects. They are described here at a high level — always check each project’s own site and documentation for current features, licensing, and any paid editions.

• osTicket — one of the oldest and most popular open source help desks. Known for being lightweight and email-to-ticket focused; a long-standing choice for small teams who want a no-frills queue.
• Zammad — a modern open source help desk with a polished interface. Known for multi-channel intake (email, web, and integrations) and a strong knowledge-base and reporting story.
• FreeScout — a lightweight, shared-inbox-style help desk often described as a free alternative to hosted help desks. Known for a clean inbox view and a modular approach.
• UVdesk — an open source help desk built on common PHP frameworks. Known for e-commerce-friendly integrations and a customizable agent workflow.
• Faveo — an open source help desk and ticketing platform. Known for ITIL-style ticket handling and offering both self-hosted and paid hosted options.

Open source vs. hosted free tiers

The table below summarizes the typical pattern. It is general guidance, not a quote — confirm specifics on each vendor’s site.

Option	What you get	Typical limitation
osTicket / FreeScout (self-hosted)	Email-to-ticket, queues, no license fee	You host, update, secure and back it up yourself
Zammad / Faveo (self-hosted)	Multi-channel intake, knowledge base, reporting	Heavier setup; needs a capable server and maintenance
UVdesk (self-hosted)	Customizable workflows, store integrations	Developer time to install and tailor
Free tier of a hosted help desk	Hosted, quick to start, basic ticketing	Caps on agents, channels or features; upgrade to scale
Hosted SMB tool (e.g. MyInboxify)	Messengers + web in one inbox, ~15-min setup, nothing to maintain	Plan-based reply/seat limits; not an enterprise ITSM suite

When open source or free is enough

Free and open source genuinely shine in several cases:

• You already run servers and have someone comfortable maintaining them.
• Your volume is mostly email, and a classic ticket queue covers it.
• You need to customize or self-host for data-control or compliance reasons.
• Budget is tight and engineering time is cheaper than software for you.

In these situations, a self-hosted help desk can run for years at a low cash cost. The same logic applies to many small teams evaluating CRM for small business: if the free option fits the workflow, use it.

The hidden costs of self-hosting

Before you commit, price the parts that aren’t on the download page:

1. Hosting & uptime — a server or VPS, plus monitoring so tickets don’t go dark overnight.
2. Updates & security — patches, dependency upgrades, and responsibility if something is breached.
3. Setup & integrations — connecting channels and tailoring workflows takes real hours.
4. Messenger channels — many open source tools are email-first; adding WhatsApp, Telegram or Viber reliably is often the hardest part.

When a hosted SMB tool pays off

If your customers reach you mainly through messengers rather than email, the calculus changes. This is where MyInboxify fits: it is an omnichannel shared inbox that brings WhatsApp, Telegram, Viber and a website chat or web form into one window. The whole team replies from one place, each conversation can be assigned to an owner, and the full history is saved even if an employee leaves.

Setup takes about 15 minutes with no developers and no servers for you to maintain or patch — you can connect several numbers and work from mobile. Nothing gets lost: every request has a notification and a handling status. It is honestly positioned as a messenger-first tool for SMB, not an enterprise ITSM platform, so if you need deep ITIL workflows a dedicated help desk may suit you better. You can try it with 14 days free at the registration page, and it pairs naturally with the basics of what a CRM is.

How to choose

Match the tool to your real constraints, not the sticker price. If you have engineering capacity and email volume, an open source ticketing system is a strong, low-cost pick. If you have a small team, messenger-heavy customers, and no appetite for maintenance, a hosted inbox like MyInboxify removes the operational burden. For a broader comparison of paid options, see our roundup of the best help desk software.