Zammad
Alternative to Ticket management
Easy to use but powerful open-source support and ticketing system.
Actively maintained
Real momentum
AGPL-3.0
Every open-source ticketing project we track, scored on maintenance, momentum and licence — so you can tell the live competitors from the abandoned repositories.
Ticketing has 21 open-source implementations in this dataset, of which 10 show real momentum and 0 are dormant or abandoned. The leader is Zammad with 5.9k stars against a category median of 1.9k — roughly 3x the typical project. Saturation score 35/100: Open. Thin or poorly maintained open-source coverage.
The clearest opening in the dataset. Low open-source competition usually means either a genuinely underserved need or a market too small to attract volunteers — validate demand before assuming the former.
The practical test in this category: Zammad is the reference implementation at 5.9k stars, and 10 of 21 projects are still shipping. A buyer evaluating you will find at least one maintained free option, so your pricing and positioning have to answer "why not self-host Zammad?" in the first minute.
Alternative to Ticket management
Easy to use but powerful open-source support and ticketing system.
Ticketing
Email-based customer support application, help desk and shared mailbox (alternative to Zendesk and Help Scout).
Ticketing
Marketing, sales, and customer service platform designed to help businesses attract more engaged customers.
Ticketing
Helpdesk software which helps you streamline your company's support, offers an easy setup, clean user interface, and automation tools to resolve customer queries efficiently.
Ticketing
Modern omnichannel customer support desk. Live chat, email, and more in a single binary.
Ticketing
Real-time error tracking for your applications with all the details in one place. Easy setup with clear instructions included.
Ticketing
Bug tracker, fits best for software development.
Ticketing
Enterprise-grade issue tracking system.
Ticketing
Client IT documentation, ticketing, invoicing and accounting for MSPs (Managed Service Providers).
Alternative to Bug tracking/ Error tracking, Bug tracking
General-purpose bugtracker and testing tool originally developed and used by the Mozilla project.
Ticketing
Flexible web-based ticketing system used for customer service, help desk, IT service management.
Ticketing
Error tracking app to collect errors reported by your app.
Ticketing
Visual bug reporting and ticketing tool for web applications.
Ticketing
On-Premise help desk software that includes email, chat, voice & help centre publishing. Full visible source code and API.
Ticketing
Help desk ticketing and project/issue tracker.
Ticketing
Simple, easy to use help desk & knowledge base software. Custom branding, custom themes, restful API, communication channels, multi-company support, multi-language support, and much more! At least 1 n
Ticketing
Professional and extensible issue tracker.
Ticketing
Help desk software - simple but powerful.
Ticketing
Simple-to-use and -install issue tracking system with command-line, web, REST, XML-RPC, and e-mail interfaces. Designed with flexibility in mind - not just another bug tracker.
Ticketing
Powerful help desk software - easy, fast and intuitive.
Ticketing
Lightweight error tracker without a subscription (alternative to Sentry).
Existence is not competition. A project competes with you only if it is maintained, findable, deployable by your buyer and licensed for their use. Most projects fail at least one of those tests. Run all four before you shelve an idea — or before you assume you have a clear run.
Stars are a lifetime counter with no decay, so a project abandoned in 2022 still looks like a leader in 2026. In this dataset 149 projects are dormant, abandoned or archived, and several of them sit in the top decile by stars. Sort by momentum and commit activity instead — popularity tells you the project was once interesting, maintenance tells you whether it will still be there when your customer needs a bug fixed.
When a prospect says 'we could just self-host the free one', they are usually comparing your price against zero. The real comparison is your price against hosting, upgrades, backups, security patching, integration work and the engineer hours behind all of it. Quantifying that number is the single most effective response to a free-alternative objection — and it is more persuasive coming with a spreadsheet than with a feature list.
Founders treat licensing as a legal footnote and then discover it dictates strategy. Permissive licences allow closed commercial forks, which is why so many managed services exist around MIT and Apache projects — and also why your differentiation cannot be the code itself. Copyleft licences, especially AGPL, remove the closed-wrapper option entirely, which reduces competition but restricts you too. Source-available licences exist precisely to stop the wrapper business.
Search this database by category and by the commercial product you would replace. It covers 1665 projects across 130 categories, each mapped to the paid tool it substitutes. If your category shows a "Crowded" verdict, a maintained free version almost certainly exists and your positioning has to account for it.
No. It means free is your price anchor. Plenty of large companies were built next to a good open-source project — the ones that failed were the ones selling the same job at a price the free tool made indefensible. Find the part of the job the project deliberately does not do, and sell that.
Each category gets a 0–100 score built from three inputs: how many implementations exist, what share of them are still actively maintained, and how far ahead the leading project is compared with the category median. 62+ is Crowded, 38–61 Contested, under 38 Open. 11 categories are Crowded and 88 are Open.
A project has momentum when it committed code in most of the last twelve months, shipped a release recently and is not archived. 736 of 1665 projects qualify. This is the single most useful filter here — it strips out the popular-but-dead repositories that make a category look more competitive than it is.
It depends entirely on the licence. MIT, Apache and BSD let you build and sell closed products on top. GPL and AGPL require derivative work to stay open, and AGPL extends that to network use, which blocks most SaaS wrappers. BSL, SSPL and Commons Clause are source-available, not open source, and usually restrict competing commercial use outright.
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