Translation (Unofficial Web/App API Clients): open-source projects that exist because someone reverse engineered a closed product, sorted by GitHub stars.
Self-hosted translation API server that uses DeepL's free web backend (formerly DeepLX)
Command-line translator using Google, Bing and Yandex web translate APIs
Free Google Translate client for Python using the web translate endpoint
Node.js client for Google Translate's free web API
Python library calling the free web APIs of dozens of online translators
Python library and CLI for Google Translate's undocumented text-to-speech endpoint
Python translator wrapping free web endpoints of Google, DeepL, Linguee and others
Desktop translator using Google, Yandex and Bing web translation APIs
Privacy-focused Android translator using Google, DeepL and other unofficial backends
GNOME translation app using Google Translate's web API and others
Python module grouping multiple undocumented translation web APIs
Unofficial Android app for DeepL Translator
DeepL translator CLI that works without an API key by driving the web app
Node module for DeepL Translator via its undocumented API
Unofficial PHP client for the DeepL.com translation API
Free Node.js client for Bing / Microsoft Translator's web endpoint
Proxy that converts linguee.com HTML responses into a JSON API
Unofficial Python package for translating text through deepl.com
Unofficial free DeepL API client for Node.js
Python Google Translate client using a reverse engineered public API
Reverse engineered DeepL translate API
Unofficial library for Yandex's voice-over video translation (VOT) API
Unofficial Python client for the Kakao translate API
Unofficial library for free Yandex OCR via the Translate API
Unofficial DeepL translation API client that uses the web endpoint