When comparing AppHarbor vs OpenShift, the Slant community recommends OpenShift for most people. In the question“What are the best Platform as a Service providers that have a free plan?” OpenShift is ranked 1st while AppHarbor is ranked 9th. The most important reason people chose OpenShift is:
OpenShift offers a collection of pre-built cartridges that allow you to quickly add functionality to your gears. These are also useful for learning about how OpenShift works.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy setup
Getting started with AppHarbor is pretty easy and straightforward. You sign up and after a few clicks you choose the database system you need and you are ready to deploy your app.
Pro Pre-built cartridges
OpenShift offers a collection of pre-built cartridges that allow you to quickly add functionality to your gears. These are also useful for learning about how OpenShift works.
Cons
Con .NET only
AppHarbor only support .NET applications.