Sourcegraph - Sourcegraph is a free, self-hosted code search and intelligence server that helps developers find, review, understand, and debug code. Use it with any Git code host for teams from 1 to 10,000+.
Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
Atlassian Fisheye - With FishEye you can search code, visualize and report on activity and find for commits, files, revisions, or teammates across SVN, Git, Mercurial, CVS and Perforce.
Dokku - Docker powered mini-Heroku in around 100 lines of Bash
Krugle - Krugle is the complete enterprise solution for search targeted to the development organization.
Google Cloud Functions - A serverless platform for building event-based microservices.