Top 3 C++ machine-translation Projects

CTranslate2

13 2,776 9.0 C++

Fast inference engine for Transformer models

Project mention: Distil-Whisper: distilled version of Whisper that is 6 times faster, 49% smaller | news.ycombinator.com | 2023-10-31

Just a point of clarification - faster-whisper references it but ctranslate2[0] is what's really doing the magic here.
Ctranslate2 is a sleeper powerhouse project that enables a lot. They should be up front and center and get the credit they deserve.
[0] - https://github.com/OpenNMT/CTranslate2

dsnote

1 326 9.8 C++

Speech Note Linux app. Note taking, reading and translating with offline Speech to Text, Text to Speech and Machine translation.

Project mention: Speech Note: offline Linux app for note taking, reading and translating | news.ycombinator.com | 2023-08-30

WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
bergamot-translator

31 297 6.4 C++

Cross platform C++ library focusing on optimized machine translation on the consumer-grade device.

Project mention: Fast and secure translation on your local machine with a GUI | news.ycombinator.com | 2024-04-13

Interestingly, I think this is actually related to the offline translation features built into Firefox. Both are products of "Project Bergamot", but the Mozilla-maintained version was later merged into the Firefox application:
https://browser.mt/
https://blog.mozilla.org/en/mozilla/local-translation-add-on...
https://hacks.mozilla.org/2022/06/training-efficient-neural-...
https://github.com/mozilla/firefox-translations
https://firefox-source-docs.mozilla.org/toolkit/components/t...
Extra webpage with screenshot and links, impossible to search for normally:
https://translatelocally.com/downloads/
Does one thing and does it well.
Oh— For downloading models, it's much easier to pipe/`xargs` `translateLocally --available-models` into `translateLocally -d` than go through the GUI.
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Other self-hostable translation tools:
https://www.apertium.org/index.eng.html
- Traditional rule-based translation. Seems to work pretty well, but no good desktop frontend.
https://www.argosopentech.com/
- Works, but crashy desktop app.
https://libretranslate.com/
- API wrapping Argos Translate.
https://lingva.thedaviddelta.com/
- Google Translate scraper/privacy frontend.
https://euroglot.com/
- Proprietary, subscription trialware.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).