Weblate

open_source

Weblate is a free, open-source web-based localization platform with VCS integration, quality checks, and cloud hosting. Used by 2,500+ projects in 165+ countries.

Productivity

Team Collaboration Tools

Workflow Automation Tools

About

Weblate is a powerful, web-based localization and translation management platform designed for software projects of all sizes. Licensed under GNU GPLv3+, it can be self-hosted for free or used as a fully managed cloud service starting at €47/month. The platform supports a wide range of file formats including gettext PO/MO, JSON, XLIFF, YAML, Qt TS, and many more, making it highly flexible for diverse development stacks. At its core, Weblate integrates tightly with version control systems like Git, enabling a continuous localization workflow that automatically follows project development. Translators work in a simple and clean web interface, with translations propagated across related components automatically. Built-in customizable quality checks help teams catch errors early, while the platform ensures all contributors are properly credited in the VCS history. Weblate is trusted by thousands of open-source projects and enterprise teams globally. It supports unlimited languages and projects, scales from small indie apps to millions of hosted strings, and offers cloud-ready appliances for easy deployment. A free gratis plan is available for qualifying libre software projects. Whether you're coordinating a global open-source community or managing enterprise software localization, Weblate provides the infrastructure to streamline the entire translation lifecycle.

Key Features

Continuous Localization: Automated localization workflows stay in sync with your project's development cycle, reducing manual handoffs and delays.
Version Control Integration: Deep integration with Git and other VCS platforms ensures translations are committed, tracked, and credited alongside source code.
Customizable Quality Checks: Built-in and configurable quality checks help translators catch errors, inconsistencies, and formatting issues before they ship.
Broad File Format Support: Supports gettext PO/MO, JSON, XLIFF, Qt TS, YAML, and many more formats to fit any development stack.
Flexible Deployment Options: Available as a fully managed hosted cloud service or as a self-hosted installation with complete control over your data.

Use Cases

Open-source project maintainers coordinating community-driven translations across dozens of languages.
Software development teams managing continuous localization of web and mobile apps alongside their CI/CD pipeline.
Enterprises centralizing translation management for multiple products with version-controlled translation files.
Non-profits and NGOs localizing digital tools for global audiences with limited budgets using the free hosted tier.
SaaS companies automating translation workflows to ship multilingual product updates without manual handoffs.

Pros

Truly Open Source: Licensed under GNU GPLv3+, Weblate can be self-hosted for free, giving teams full control and transparency over their localization infrastructure.
Seamless VCS Integration: Tight Git integration means translations flow directly into your repository, keeping development and localization workflows in sync automatically.
Large & Active Community: Trusted by 2,500+ open-source projects across 165+ countries, ensuring a well-tested, community-vetted platform with strong documentation.
Free for Libre Projects: Qualifying open-source projects can apply for a free hosted plan with up to 160,000 strings, lowering the barrier for community-driven software.

Cons

Self-Hosting Requires Technical Expertise: Setting up and maintaining a self-hosted Weblate instance requires server administration skills and ongoing maintenance effort.
Hosted Plans Can Get Costly at Scale: Cloud pricing scales with the number of hosted strings, which can become expensive for very large projects or enterprises with extensive translation needs.
Limited AI-Assisted Translation Features: Compared to some modern platforms, Weblate's built-in AI/machine translation integrations are less prominent out of the box.

Frequently Asked Questions

Weblate is an open-source, web-based localization and translation management platform that integrates tightly with version control systems like Git. It helps development teams manage translations across multiple languages and projects in a continuous, automated workflow.

Yes. The Weblate software itself is free and open-source (GNU GPLv3+) and can be self-hosted at no cost. A free hosted plan is also available for qualifying libre/open-source projects. Paid hosted plans start at €47/month for teams wanting a managed service.

Weblate supports a wide variety of translation file formats including gettext PO/MO, JSON, XLIFF, Qt TS, YAML, Android resources, iOS strings, and many more, making it compatible with most development ecosystems.

Yes. Weblate is fully self-hostable. You can deploy it on your own server or cloud infrastructure. The software is freely available, and paid support packages are available for organizations that need professional assistance.

Weblate integrates directly with Git repositories. Translated strings are automatically committed back to the repository, and the platform tracks who made each translation for proper attribution. This keeps your localization process in sync with your development workflow.