Does this have a comparable add-on or plugin architecture? One of the main bonuses of Heroku is not necessarily the web/worker process management but the easy ability to manage: email, SSL, nosql, and tons of other misc stuff you need for an app. With limited dev resources, its way easier to just let Heroku handle all that config. The default app setup and sys admin is not as big a deal.
Cloud 66 however doesn't end at the end of deployment. It actively manages the app by monitoring the processes, making it extremely easy to add load balancers, scale web servers or background processes, add SSL certificates, schedule backups with one click and a lot more.
It also has an app store which is growing. We would love to hear you feedback about those features.