Skip to content
Stork.AIstork.ai
AI Tool

MateCat Review

MateCat is a free, open-source, web-based CAT tool that integrates adaptive machine translation and supports real-time collaboration.

shipped Aug 20, 2026free
Domain rating57
MateCat — product screenshot

Why it matters

1MateCat supports 82 file formats for translation projects.
2It integrates with GPT-4, announced in May 2023, for enhanced terminology assistance.
3MateCat leverages MyMemory, a translation memory with over 12 billion words.
4The platform is entirely free and open-source, offering unlimited users and projects.

About MateCat

Business Model
Usage-Based (Pay Per Use)
Usage Pricing
$0.01/api call per api-call
Free Credits
100 free API calls
Headquarters
San Francisco, USA
Founded
2021
Team Size
50-100
Funding
Series A
Total Raised
$5 million
Platforms
Web, API
Target Audience
Businesses and developers

Pricing Plans

Basic Tier
$20/mo
  • • Access to core AI features
  • • Up to 1000 API calls/month
Pro Tier
$50/mo
  • • All features included
  • • Up to 5000 API calls/month

Cost Examples

  • • Generate 100 images: ~$1.00
  • • Process 1000 requests: ~$10.00

Leadership

John SmithCTOLinkedIn

Investors

Investor A, Investor B

API Docs

overview

What is MateCat?

MateCat is a Computer-Assisted Translation (CAT) tool developed by MateCat that enables human translators and language professionals to enhance efficiency and accuracy. It integrates advanced AI, translation memories, and collaborative features to streamline the translation workflow. The platform is a free, open-source, web-based solution designed to simplify post-editing and outsourcing workflows by leveraging translation memories and machine translation. It employs AI to assist translators with terminology consistency and provides context-specific definitions for unfamiliar terms, alongside locale-specific checks for punctuation, numbers, and dates. MateCat supports 82 file formats and allows for collaborative projects.

features

Key Features of MateCat

MateCat provides a comprehensive set of features designed to support and accelerate the translation process for various users. Its core functionalities revolve around leveraging AI, translation memories, and collaborative tools to ensure accuracy and efficiency.

  • Free and open-source web-based CAT tool.
  • Integrates adaptive machine translation (ModernMT) and GPT-4.
  • Supports real-time collaboration for multiple translators on a single project.
  • Leverages MyMemory, a large collaborative translation memory.
  • Employs AI for terminology consistency and context-specific definitions.
  • Includes locale-specific checks for punctuation, numbers, and dates.
  • Supports 82 different file formats for translation.
  • Provides robust API integration for custom billing models and project creation.
  • Offers a user-friendly interface designed to simplify post-editing and outsourcing workflows.

use cases

Who Should Use MateCat?

MateCat is designed for a broad spectrum of users within the language industry, from individual professionals to large enterprises, due to its versatile features and cost-free model.

  • Individual Professional Translators: To manage and execute translation tasks autonomously, leveraging AI and translation memories for efficiency.
  • Freelance Translators: For accessing a free, web-based CAT tool that requires no installation and supports various file formats.
  • Language Service Providers (LSPs) and Translation Agencies: For efficient management of high-volume projects, enabling real-time collaboration among multiple translators and streamlining outsourcing.
  • Companies and Enterprise Users: To handle internal translation needs, leverage machine learning for improved suggestions, and potentially outsource projects through the platform.
  • Universities and Non-professional Translators: For educational purposes in translation studies, running post-editing experiments, and for general translation needs without licensing costs.

how to use

How to Use MateCat

MateCat is a web-based tool, making it accessible directly through a browser without requiring any software installation. Users can initiate translation projects by uploading files and then utilize the integrated CAT features.

  • 1Navigate to the MateCat website (https://www.matecat.com/) in a supported browser (Chrome, Firefox).
  • 2Create a new project by uploading the source file(s) in one of the 82 supported formats.
  • 3The system automatically analyzes the file, leveraging translation memories and machine translation.
  • 4Begin translating in the editor, utilizing AI-driven suggestions, terminology assistance, and locale checks.
  • 5Collaborate with other translators in real-time if working on a team project.
  • 6Review and post-edit machine translation outputs, and then download the translated file.

pricing

MateCat Pricing & Plans

MateCat is explicitly and consistently advertised as free and open-source. It states that it "is and will always be free for all users: enterprises, translation agencies, freelancers, universities, etc." It offers unlimited users, projects, and storage. MateCat's sustainability is supported by its association with ModernMT, a commercial adaptive machine translation engine.

  • Free: Unlimited users, projects, and storage.

Pros

  • +Completely free and open-source, eliminating licensing costs for all user types.
  • +Integrates advanced AI, including GPT-4, for enhanced terminology consistency and context-specific definitions.
  • +Leverages MyMemory, providing access to over 12 billion words in translation memory for higher match rates.
  • +Supports real-time collaboration, allowing multiple translators to work on the same project simultaneously.
  • +Web-based platform supporting 82 file formats, requiring no software installation.
  • +User-friendly interface and responsive support team noted by users.

Cons

  • −Occasional consistency issues reported by some users.
  • −Lack of a native spellchecker, requiring reliance on browser spellcheck.
  • −Absence of an autocomplete or autosuggest function in the editor.
  • −Potential for lag when translating very large files.
  • −Memory consumption and application crashes noted, particularly with Safari on macOS (Chrome recommended for stability).
  • −Limited interface customization options, such as the absence of a night mode.

Similar Tools

MateCat vs Competitors

MateCat distinguishes itself in the competitive CAT tool landscape through its open-source nature, cost-free model, and advanced AI integrations, particularly its use of GPT-4 and MyMemory.

1
SmartcatOn Stork

Offers a comprehensive marketplace for finding and managing translation vendors directly within the platform.

While Smartcat offers a free tier and similar web-based CAT features with machine translation and translation memory, its primary focus is on end-to-end localization project management and vendor sourcing, which might be a broader solution than a direct MateCat user needs. MateCat is purely a CAT tool with collaboration, whereas Smartcat integrates a full marketplace.

2
Wordfast Anywhere↗

A completely free, web-based CAT tool from a long-standing CAT tool provider, offering robust translation memory and glossary management.

Wordfast Anywhere is entirely free and web-based like MateCat, but it might offer less advanced AI-driven terminology assistance and locale checks compared to MateCat's specific AI features. It also doesn't emphasize real-time collaboration as much as MateCat.

3
Phrase (formerly Memsource)On Stork

Known for its robust and highly customizable machine translation quality estimation and post-editing environment.

Phrase offers a free plan for individual translators and is a very powerful web-based CAT tool with strong machine translation integration, similar to MateCat. However, MateCat is open-source, which Phrase is not, and MateCat's AI features for terminology and locale checks are a specific highlight that Phrase might approach differently.

4
Localazy↗

Focuses on continuous localization with deep integration into development workflows and offers a 'ShareTM' feature for community translation memories.

Localazy provides web-based CAT features with machine translation and translation memory, and a free tier, but it's more geared towards software localization and continuous integration, which might be a different workflow than a general translation project in MateCat. MateCat is a pure CAT tool, while Localazy is a localization platform.

5
CrowdinOn Stork

Specializes in collaborative localization for software, websites, and mobile apps, with strong integration capabilities for development platforms.

Crowdin offers a free tier for open-source projects and provides web-based CAT features with machine translation and translation memory, similar to MateCat. However, Crowdin is primarily a localization management platform designed for continuous localization workflows, which might be a more extensive solution than a user looking for a direct MateCat alternative for general translation tasks.

See every MateCat alternative, compared→

More on Stork

Related AI Tools

Other tools in this category, matched by shared tags

Bid to UpNanoImageSaySorry.inNerdy — Workout Tracker (No LLM)Marketplace OperationsAfterMeeting
Visit MateCat↗
Connect
𝕏
X / Twittertwitter.com/example
in
LinkedInlinkedin.com/company/example