Dokku vs Shelly Cloud: What are the differences?
Dokku: Docker powered mini-Heroku in around 100 lines of Bash. Docker powered mini-Heroku. The smallest PaaS implementation you've ever seen; Shelly Cloud: Platform for hosting your Ruby and Rails apps (hosted in Europe). Shelly Cloud is significantly cheaper than other PaaS hosting providers. You save money by getting all services needed to run your application from one provider. We run our own servers, so there is no "Amazon tax" included in our prices. You pay only for what you use with per-hour metered billing.
Dokku and Shelly Cloud can be categorized as "Platform as a Service" tools.
"Simple" is the primary reason why developers consider Dokku over the competitors, whereas "Simple scaling" was stated as the key factor in picking Shelly Cloud.
Dokku is an open source tool with 17.7K GitHub stars and 1.44K GitHub forks. Here's a link to Dokku's open source repository on GitHub.