The data is sourced directly from Crowdin which means the TER is providing real-time status of localization efforts. CrowdIn is the cloud-based content localization solution integrated with TYPO3 CMS.
Translating the UI of your extension makes it available for more users, and is an important consideration for a global product such as TYPO3. Extension authors can decide to have their extension on Crowdin and the project is set up automatically and connected to the version control system of the extension.
The localization status is displayed above the installation section, and is available for all extensions that use CrowdIn for localization. Check out the documentation to get to know more about the TYPO3 Crowdin integration, and how to bring your extension to Crowdin.
Click a language to open the translation on crowdin.com.