> With Sinatra, you either need to come up with and fully grok your own structure (always a good thing, IMHO) or a myriad of plugins and middlewares. This is a

> With Sinatra, you either need to come up with and fully grok your own structure (always a good thing, IMHO) or a myriad of plugins and middlewares. This is a good assessment. If it's a big project with a lot of CRUD on a large variety of models in a complex database, by the time you'd added all the stuff to Sinatra that would be useful, you'd have recreated Rails. You could still very much use Sinatra for a large project, but it would be best for a large project that is not a standard CRUD- and form-heavy web app. For example, if you wanted to build, say, an online video encoding service.