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Translation · head to head

MateCat vs Pontoon

MateCat logo

MateCat

Translation

Free, browser-based CAT tool under the LGPL, developed and hosted by the translation company Translated

From
Free
Rated
-
Full reviewWebsite
Pontoon logo

Pontoon

Translation

Mozilla open source localisation platform that you host yourself

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: MateCat the hosted version most users rely on depends on Translated srl’s continued operation and infrastructure decisions, unlike a self-run desktop tool.; Pontoon there is no hosted commercial edition, so adopting it means running Django, PostgreSQL and a task queue yourself and keeping them patched.
  • They diverge on capability: MateCat covers Browser-based CAT interface, Pontoon covers Repository sync.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which MateCat and Pontoon actually diverge.

Attributes where MateCat and Pontoon differ
AttributeMateCatPontoon
PlatformsWebWeb, Self-hosted

Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), user rating (Not yet rated), category (Translation).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in MateCat

  • Browser-based CAT interface
  • Quality assurance checks
  • Project management
  • File translation

Only in Pontoon

  • Repository sync
  • Suggest and approve workflow
  • Fluent support
  • Contributor statistics

Both cover

  • Machine translation suggestions
  • Translation memory

What people use each for

The jobs each tool is most often brought in to do.

MateCat

  • A freelance translator wanting a no-install, browser-based CAT tool with built-in machine translation suggestionsnot Pontoon
  • A small agency wanting basic hosted project management without paying for a commercial TMSnot Pontoon
  • A translator who wants MT suggestions from multiple engines surfaced alongside translation memory matches in one interfacenot Pontoon
  • A team occasionally needing quick file translation through a browser without setting up desktop softwarenot Pontoon

Pontoon

  • Open source projects with volunteer translator communities across many localesnot MateCat
  • Organisations that must keep translation data on their own infrastructurenot MateCat
  • Projects using Mozilla Fluent where commercial tools have partial or no supportnot MateCat
  • Replacing a per seat translation platform where contributor count, not word volume, drives the billnot MateCat

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

MateCat

  • The hosted version most users rely on depends on Translated srl’s continued operation and infrastructure decisions, unlike a self-run desktop tool.
  • It is developed by a commercial translation company whose own paid services sit alongside the free tool, which is worth being aware of when evaluating vendor neutrality.
  • Being browser-based, it requires a stable internet connection, unlike OmegaT’s fully offline desktop application.
  • Advanced terminology management and enterprise-scale project features are more limited than a paid commercial TMS such as memoQ or Smartling.
  • Self-hosting the open source LGPL code independently of Translated’s hosted service requires technical setup effort that most individual translators are unlikely to undertake.

Pontoon

  • There is no hosted commercial edition, so adopting it means running Django, PostgreSQL and a task queue yourself and keeping them patched.
  • No vendor support and no service level agreement exist, so an outage during a release freeze is your engineering problem alone.
  • The roadmap serves Mozilla localisation needs first, and features outside that scope are unlikely to be built for you.
  • Format coverage is narrow next to commercial systems: it is strong on PO and Fluent, weak on document formats such as InDesign or complex XML.
  • Because you host it, security and compliance evidence such as an external audit report does not exist, so any assurance your customers need has to be produced by your own team.

Pricing, plan by plan

MateCat

Free
  • MateCatFree
    • Free browser-based CAT tool, LGPL licensed
    • Hosted and operated by Translated srl

Pontoon

Free
  • Open source, self-hostedFree
    • No licence fee and no per contributor charge
    • You provide hosting, database and maintenance
    • Machine translation billed by whichever engine you connect

Which should you pick?

Choose MateCat if

  • You need browser-based cat interface.
  • You want to start without paying.
  • You also want quality assurance checks.
MateCat review

Choose Pontoon if

  • You need repository sync.
  • You want to start without paying.
  • You work on Web, Self-hosted.
  • You also want suggest and approve workflow.
Pontoon review

Questions people ask

Is MateCat or Pontoon better?
Neither clearly leads. MateCat starts at Free and Pontoon at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, MateCat or Pontoon?
MateCat starts at Free and Pontoon at Free.
Does MateCat or Pontoon run on more platforms?
MateCat runs on Web. Pontoon runs on Web, Self-hosted.
Can I use MateCat for free?
Both have a free tier, so you can try either at no cost before committing.
What is MateCat best used for?
MateCat is most often used for a freelance translator wanting a no-install, browser-based cat tool with built-in machine translation suggestions, a small agency wanting basic hosted project management without paying for a commercial tms, a translator who wants mt suggestions from multiple engines surfaced alongside translation memory matches in one interface, a team occasionally needing quick file translation through a browser without setting up desktop software. Of those, a freelance translator wanting a no-install, browser-based cat tool with built-in machine translation suggestions and a small agency wanting basic hosted project management without paying for a commercial tms are not what Pontoon is typically brought in for.
What can MateCat do that Pontoon cannot?
MateCat covers Browser-based CAT interface, Quality assurance checks, Project management, File translation. Pontoon covers Repository sync, Suggest and approve workflow, Fluent support, Contributor statistics. Both handle Machine translation suggestions, Translation memory.

Answered from the vendors’ own pages

MateCat: Is MateCat really free?

Yes, it is free to use as a hosted browser-based tool and released as open source under the LGPL.

Pontoon: Is there a paid hosted version?

No. Mozilla runs an instance for its own projects. Anyone else deploys their own.

MateCat: Who maintains MateCat?

Translated srl, an Italian translation company, develops and hosts it; this differs from OmegaT, which is maintained by a volunteer open source community.

Pontoon: What does it actually cost?

Server hosting, engineering time to operate it, and whatever machine translation engine you connect. There is no licence fee.

MateCat: Can I self-host MateCat instead of using Translated’s hosted version?

The code is open source under the LGPL and technically self-hostable, but doing so requires meaningful technical setup most individual users skip in favour of the hosted service.

Pontoon: Is it suitable for a commercial product?

Only if you have infrastructure staff and mostly software string formats. Document translation and vendor support are missing.

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