OpenShift from Red Hat is often cited as a competitive offering in Heroku vs X reviews. When I first checked it out they hadn't yet come out of beta. Uses git

OpenShift from Red Hat is often cited as a competitive offering in Heroku vs X reviews. When I first checked it out they hadn't yet come out of beta. Uses git just like Heroku. Has a similar "dyno" concept but calls them gears. Has a free developer version. Don't know about support today, but the people I talked to from the team were incredibly helpful.