AppHarbor is an alternative to Azure styled after Heroku. I use both and currently I would summarize the situation as: - Azure is big and stable and ready for

AppHarbor is an alternative to Azure styled after Heroku. I use both and currently I would summarize the situation as: - Azure is big and stable and ready for production use but it also comes with the Microsoft way of doing things which can be a bloated and cumbersome at times. - AppHarbor is fast and agile but hard to take seriously as pricing is still "preliminary" and details around things like support are vague at best.