Top 12 Open-Source Alternatives to Crowdin

The top open-source alternatives to Crowdin are OmegaT, Zanata, and Virtaal. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

OmegaT Landing Page
1

OmegaT

OmegaT is a free open-source translation memory application for professional translators written in Java.
Pricing:
- Open Source
#Localization #Website Localization #App Localization 5 social mentions
Zanata Landing Page
2

Zanata

Homepage for Zanata translation software
Pricing:
- Open Source
#Localization #Website Localization #App Localization
Virtaal Landing Page
3

Virtaal

Powerful, uncluttered XLIFF and PO editor.
Pricing:
- Open Source
#Localization #Website Localization #App Localization
Tolgee Landing Page
4

Tolgee

We are saving developers time providing tool for Web application Localization
Pricing:
- Open Source
- Freemium
- Free Trial
#Developer Tools #Translation #Localization 42 social mentions
Pontoon Landing Page
5

Pontoon

Pontoon is a translation management system used and developed by the Mozilla localization community.
Pricing:
- Open Source
#Localization #Website Localization #App Localization 2 social mentions
slim.js Landing Page
6

slim.js

Lightning fast web authoring library targeted at creating web components with data binding...
Pricing:
- Open Source
#Localization #App Localization #Translation Service 1 social mentions
Apertium Landing Page
7

Apertium

To see the whole list of general documentation pages written in English, see documentation in English. Pour ceux qui sont plus à l'aise avec la langue française, une partie des pages anglaises a été traduite.
Pricing:
- Open Source
#Languages #Translation Service #Translation 3 social mentions
SimpleLocalize.io Landing Page
8

SimpleLocalize.io

Try out the most user-friendly software for managing translations. Help your developers and management team to cooperate better thanks to SimpleLocalize. Keep in sync translation content for your software project!
Pricing:
- Open Source
- Freemium
- Free Trial
- $9.0 / Monthly (1000 translation keys)
#Localization #Website Localization #App Localization 14 social mentions
locize Landing Page
9

locize

Bridging the gap between translation and development.
Pricing:
- Open Source
#Localization #Website Localization #App Localization 20 social mentions
LibreTranslate Landing Page
10

LibreTranslate

LibreTranslate is a free and open-source and self-hostable machine translation server. It also has a public instance designed for personal or infrequent use.
Pricing:
- Open Source
#Languages #Translation Service #Language Translation 16 social mentions
Open Build Service Landing Page
11

Open Build Service

Open Build Service
Pricing:
- Open Source
#Code Collaboration #Development #Git 21 social mentions
Respresso.io Landing Page
12

Respresso.io

Collaborative software resource (localization, image, color, etc.) management solution helping teams to work on single or multi-platform software products. Fully automated file generation and automatic file sync directly to your project source code.
Pricing:
- Open Source
- Free
#Developer Tools #App Localization #Localization