provy is basically divided in two namespaces: provy.core </api/provy.core> and provy.more </api/provy.more>. It is divided like this to make it easier to find the roles you need.
provy.core </api/provy.core> features the code that actually makes provy run, like the console app or the base Role.
provy.more </api/provy.more> features every single specialized role that helps users in provisioning servers, like NginxRole or AptitudeRole.
If you're looking for all the modules tree, click here </api/modules>