Crowdin - Localize your product in a seamless way
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
POEditor - The translation and localization management platform that's easy to use *and* affordable!
Frog Git - Frog Git is the community-based lightweight code hosting solution that is written in the Go language.
Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.
Kiln - Kiln is a complete source control management system based on Git and Mercurial.