DeepL
PartialBest-in-class machine translation for European languages
DeepL has long led on quality for German, French, Spanish, and other European languages; …
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Crowdin
Visit official siteThe de-facto translation home for open source
Pricing：Pro $50/月起，开源项目可申请免费
Good for
- Open-source projects with community translators
- Mid-size SaaS targeting many languages
- Teams that want auto-PRs for translations on GitHub
Not good for
- Tiny projects (setup overhead exceeds the benefit)
- Enterprise-sensitive content where translator vetting is strict (community quality varies)
Integration effort
GitHub/GitLab integration plus a CLI for resource sync. Crowdin In-Context allows in-page editing.
KYC and entity
None.
Payouts to China
N/A.
Privacy / compliance notes
Hosted in EU and US data centers, GDPR compliant.
FAQ
Is Crowdin really free for open source?
Active open-source projects that apply through Crowdin Open Source typically get Pro-tier features for free.
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Summary
Crowdin is widely used in open source — Discord, Kubernetes, Telegram, and many others — to manage community translations. Active OSS projects can apply for free Pro access.