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The best open source alternative to Crowdin is Weblate. If that doesn't suit you, our users have ranked more than 100 alternatives to Crowdin and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Crowdin are LibreTranslate, Poedit, Tolgee and LocalTranslate.
OmegaT is a free translation memory application written in Java. It is a tool intended for professional translators. It does not translate for you!




GlotPress will let you, or an entire team, to translate their favourite software. It is web-based and open-source. Here is what makes GlotPress special: Totally usable. Not less than a desktop client. Keyboard only editing, shortcuts.
BasicCAT is an open source and free computer-aided translation tool, which aims at providing a simple and useful tool for translators.

Innovative: Natural-sounding translations with genders and grammatical cases when necessary. Locale-specific logic doesn't leak to other locales.


Electron-based software designed for efficiency, enabling seamless text and image translation via keyboard shortcuts, and ensuring synchronized operations across multiple devices for diverse needs.


GNOME Translation Editor (Formerly known as Gtranslator) is an enhanced gettext po file editor for the GNOME desktop environment. It handles all forms of gettext po files and includes features such as Find/Replace, Translation Memory, different Translator Profiles, Messages...


React Intl Editor is an open-source editor for translation files generated by react-intl-translations-manager.

Translate terms with Google Spreadsheets, pull strings with a command line tool.