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.
Weblate is a web based translation tool with tight VCS integration. It features simple and clean user interface, propagation of translations across components, consistency checks and automatic linking to source files.
Czechia
EU
Free and Open Source Translation API. 100% self-hosted, no limits, no ties to proprietary services. Built on top of Argos Translate.
Poedit is cross-platform gettext catalogs (.po files) editor. It is built with wxWidgets toolkit and can run on any platform supported by it (although it was only tested on Unix with GTK+ and Windows). It aims to provide more convenient approach to editing catalogs than...
CzechiaEU
You no longer have to worry about choosing the right i18n library, editor, or platform. Tolgee is the only tool you need to translate your web-based project to any language you wish.
CzechiaEU
LocalTranslate is an offline translation application that uses Firefox’s neural translation models to perform high-quality translations locally on your device.
Zanata is a web-based system for translators, content creators and developers to manage localisation projects.
Australia
Apertium is a rule-based machine translation platform. It is free software and released under the terms of the GNU General Public License.
SpainEU
Pontoon is a translation management system used and developed by the Mozilla localization community. It specializes in open source localization that is driven by the community and uses version-control systems for storing translations.
United States
Online translation platform. Pootle allows your professional or community translators to easily complete localization tasks. For you it becomes easier to manage and monitor the distributed work.
South Africa
Lokalize is the localization tool for KDE software and other free and open source software. It is also a general computer-aided translation system (CAT) with which you can translate OpenDocument files (*.odt).
GermanyEU
A fast and lightweight AI powered desktop translation application built with Rust and Tauri that provides instant translation between multiple languages with global hotkey support, system tray integration, and a beautiful user interface.
Norway
Open-source localization toolkit with tools for text conversion, review, debugging, format conversion, and terminology extraction across formats like PO, XLIFF, DTD, and CSV, customizable for projects, with Python utilities and online documentation.
