Immersive Translate
Leading#2 in Open sourcehigh confidence
Bilingual side-by-side web-page, PDF, and ebook translation, loved for reading foreign content in context (~18k stars).Our read
Why it ranks #2
Roughly 18k GitHub stars and more than 20 million claimed users make it the most visibly adopted bilingual-reading extension in this list; community feedback centers on web, PDF, and subtitle workflows.Here is the catch
The current repository is release/feedback code, not source-available software
Advanced PDF, image, and model access requires a subscription
Quality and quotas vary with the selected third-party engine
Does this well
Excellent bilingual reading experience with original context visible
Unusually broad coverage of pages, PDFs, videos, and e-books
Multiple engines let users trade quality, speed, and cost
Pricing
Checked by hand on 2026-07-23. Prices in this category change often — if this looks wrong, it probably is.
Key features
Side-by-side bilingual web pagesLayout-preserving PDF, EPUB, and document translationVideo subtitle and meeting translationMulti-engine AI model switching
Sources we read
Quick facts
More in this area
The rest of the Open source column.- 1openai-translator (yetone)Wildly popular LLM-based translation and polishing tool (browser extension, desktop app, userscript); a recognized OSS translation leader (~25k 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.