SourceTree - Mac and Windows client for Mercurial and Git.
Heroku - Agile deployment platform for Ruby, Node.js, Clojure, Java, Python, and Scala. Setup takes only minutes and deploys are instant through git. Leave tedious server maintenance to Heroku and focus on your code.
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
Back4App - Low code backend to build apps faster and scale easily.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Google App Engine - A powerful platform to build web and mobile apps that scale automatically.