Alternatives / Crowdin
Looking for an open source Crowdin alternative? We compared 4 open source localization platforms by license, AI translation, Git integration, and maintenance. Weblate and Tolgee are full translation platforms, while Lingo.dev and Languine focus on AI-driven automation in developer workflows.
Written by Maxime DERAME
Last updated:
| Alternative | Best for | License |
|---|---|---|
| Weblate | Continuous localization with Git integration | GPL-3.0 |
| Tolgee | In-context editing and Figma plugin | Apache-2.0 + ee directories |
| Lingo.dev | AI localization in the dev workflow | Apache-2.0 |
| Languine | AI translation CLI for CI | MIT |
We looked for open-source tools that manage translations like Crowdin: syncing strings with code, translation workflows, and quality checks. We verified each project's license, recent activity, stars, and self-hosting in its repository. See our methodology for the full criteria.
Weblate is the most established: continuous localization with tight Git integration, quality checks, translation propagation, and a free self-hosted option. Tolgee is a localization platform with in-context editing so non-developers can edit translations in the running app.
Lingo.dev adds Git-native automation with AI translation into many languages, and Languine is a CLI and GitHub Action that translates files in CI. Both depend on AI quality rather than human review workflows.
Tolgee is Apache-2.0 with enterprise directories, and its free cloud tier is limited to 500 keys and 3 seats. Weblate is GPL-3.0, and its hosted plans start at EUR 45 per month. Languine's last commit was in May 2026.
Tolgee and Lingo.dev are Apache-2.0 (Tolgee with ee directories). Weblate is GPL-3.0. Languine is MIT.
Tolgee, Weblate, and Lingo.dev had commits within days of this update.
Crowdin is a proprietary SaaS priced by hosted words or projects, with translation memory and strings stored on its servers. Open-source platforms can be self-hosted at no per-word cost, but human translator marketplaces and some integrations are not included.
Weblate is a GPL-3.0 web-based localization platform with tight version control integration, quality checks, and translation propagation across components. It is used by thousands of projects and can be self-hosted for free.
Pricing: Free to self-host; hosted plans start at EUR 45 per month.
Lingo.dev is an Apache-2.0 set of localization tools that integrate into the development workflow with Git-native automation, a CLI, and SDKs. It translates into 80+ languages with AI, so translation quality depends on the models and context you provide.
Pricing: Free open-source tooling; hosted engine has paid plans.
Tolgee is an open-source localization platform that lets non-developers edit translations directly in the running app, with AI translation, a REST API, and a Figma plugin. Most of the code is Apache-2.0, while files in ee directories are under a separate license.
Pricing: Free to self-host; the free cloud tier is limited to 500 keys and 3 seats.
Languine is an MIT developer-focused localization tool with a CLI and a GitHub Action that automates translation in CI/CD. It supports TypeScript, JSON, and YAML files and brand voice and terminology rules. The last commit was in May 2026.
Pricing: Free open-source CLI; hosted platform has paid plans.
| Alternative | Type | License | Self-hosted | Best for |
|---|---|---|---|---|
| Weblate | Localization platform | GPL-3.0 | Yes | Closest replacement |
| Tolgee | Localization platform | Apache-2.0 + ee | Yes | Product teams |
| Lingo.dev | Localization automation | Apache-2.0 | CLI / hosted | Automated pull requests |
| Languine | Localization CLI | MIT | CLI | Developer pipelines |
Want translators and Git workflows
Weblate integrates tightly with GitHub and GitLab and has quality checks.
Want non-developers to edit in the app
Tolgee offers in-context editing, a REST API, and a Figma plugin.
Want automated AI translations in PRs
Lingo.dev opens automated pull requests and offers a CLI and SDKs.