The majority of Ruby jobs is on Rails. All I need, personally, is a server like Puma, a router like Roda and the pg gem really. Then of course it depends on the

The majority of Ruby jobs is on Rails. All I need, personally, is a server like Puma, a router like Roda and the pg gem really. Then of course it depends on the application you need to develop. I would probably need some library to coerce string values to types (boolean, integer) for forms, and a mapping mechanism of some form to convert a pg result in a data shape I control.