OpenStack I18n (Internationalization) team uses Zanata quite well and now the team uses Zanata 4.3.3: https://translate.openstack.org/ . In OpenStack projects, all the translation statistics are collected to Stackalytics which provides all the statistics in OpenStack activities: not only translation, but also commits, e-mails in mailing list, bug submissions, and so on. Translation stats are available through http://stackalytics.com/?metric=translations and a list of translators with language teams ( http://git.openstack.org/cgit/openstack/i18n/tree/tools/zanata/translation_team.yaml ) is used for Stackalytics to collect contribution statistics (example specification: http://git.openstack.org/cgit/openstack/stackalytics/tree/etc/default_data.json#n23432 ).
Since there is currently no method to retrieve the list of translators via REST API, I18n team has been doing a trick: crawling method from https://translate.openstack.org/language/list in Zanata 3.9.6 (File source: http://git.openstack.org/cgit/openstack/i18n/tree/tools/zanata/zanata_users.py ).
We now use Zanata 4.3.3, but unfortunately such crawling method does not work anymore for the two reasons:
1) New https://translate.openstack.org/languages page is not anonymous anymore. Login is required to see the content in this page.
2) The HTML markups for UI seems quite different from markups in 3.9.6.
API for all users per team, with role