django-rosetta

Django-rosetta gives you a web interface to edit translation files. Instead of hunting through .po files in a text editor, translators (even non-technical ones) can log into your Django admin and translate strings through a browser.

It's fully free. MIT license, no paid tier, no hosted service. Install the package, add it to your Django settings, and your admin panel gets a translation interface. It reads and writes the standard gettext .po files Django already uses.

The catch: this is a developer convenience tool, not a translation management platform. There's no translation memory, no machine translation integration, no workflow for managing dozens of languages across large teams. It works well for small to medium Django projects where you have a handful of languages and a few people doing translations. For anything bigger, you need a dedicated platform like Weblate or Traduora. Also, giving translators access to your Django admin means they're inside your admin panel, which is a security consideration.