openai-translator (yetone)
Leading#1 in Open sourcehigh confidence
Wildly popular LLM-based translation and polishing tool (browser extension, desktop app, userscript); a recognized OSS translation leader (~25k stars).Our read
Why it ranks #1
One of the most adopted open translation clients at roughly 22k GitHub stars, with a large user-facing browser/desktop footprint and ongoing provider-support activity.Here is the catch
You must configure a provider API and pay its usage costs
Output quality depends on the selected model and endpoint
Support and troubleshooting are primarily community-driven
Does this well
Ready-to-use cross-platform workflow rather than a bare API
Large community and broad provider compatibility
Useful for both translation and rewriting
Pricing
Checked by hand on 2026-07-23. Prices in this category change often — if this looks wrong, it probably is.
Key features
Browser extension, desktop app, and userscriptSelected-text and page translationMultiple LLM/provider backendsTranslation polishing and proofreading
Sources we read
Quick facts
More in this area
The rest of the Open source column.- 2Immersive TranslateBilingual side-by-side web-page, PDF, and ebook translation, loved for reading foreign content in context (~18k stars).
- 3LibreTranslateThe de-facto free, self-hosted machine-translation API — offline-capable, with no proprietary dependencies (~16k stars).
- 4translate-shellCommand-line translator wrapping Google/Bing/DeepL and more; a Unix-workflow staple for quick terminal translation (~7.5k stars).
- 5OpenNMT-pyResearch-grade neural machine-translation toolkit for training and serving your own translation models (~7k stars).
- 6Argos TranslateOffline neural translation library (the engine under LibreTranslate) usable as a Python lib, CLI, or GUI (~6k stars).
- 7Huanshere/VideoLingoSelf-hosted pipeline that cuts, translates and time-aligns video subtitles with WhisperX, then optionally dubs them with cloned voices.