OmegaT review
A capable free CAT tool for translators who need memories, glossaries, and format coverage.
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
OmegaT is a free, open-source computer-assisted translation application for professional translators. It runs locally on Windows, macOS, and Linux and supports document and website translation workflows through broad file-format coverage. Its feature set includes fuzzy matching, match propagation, simultaneous processing of multiple-file projects, multiple translation memories, and user glossaries that recognize inflected forms. Support for more than 30 formats includes Office, HTML, XHTML, OpenDocument, MediaWiki, and plain text. TMX, TTX, TXML, XLIFF, and SDLXLIFF compatibility also helps translators work with established translation-memory exchange formats.
OmegaT uses a free, open-source pricing model rather than paid subscription tiers. The free offering includes the core desktop CAT environment, translation memory, glossary tools, file-format support, and machine-translation integrations. It can connect with Apertium, DeepL API, Azure Translate, and Google Translate, while machine-translation and neural-machine-translation connections are also available through integrations and plugins. Because there is no paid plan structure, there are no higher tiers that add collaboration, workflow, or API capabilities; the product’s value is concentrated in local translation work and extensibility through its open-source model.
OmegaT is less suited to organizations that need built-in collaboration, deeper workflow management, or a native API-centered integration layer. Its local desktop approach can also be a drawback for teams that prefer browser-based translation environments or centralized project administration. Translators who work independently across operating systems and need a free tool with translation memories, glossaries, format compatibility, and machine-translation connections should find the feature mix relevant. Teams prioritizing shared workflows, managed collaboration, or broader integration infrastructure should consider an alternative designed around those needs.
OmegaT pros and cons
- Where it wins
- Free and open source on Windows, macOS, and Linux
- Supports more than 30 file formats and major TM exchange formats
- Combines fuzzy matching, propagation, memories, glossaries, and MT integrations
- Where it doesn't
- Collaboration and workflow depth are limited
- Native API access is a limitation for integration-heavy teams
- Local desktop delivery may not suit browser-first translation teams
OmegaT fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update