It's not just about how many, but how mature they are. There's been a lot of work in the last year.
For servers, there's rotor and hyper. Database drivers, we have very good Postgres and MongoDB options, with some SQlite bindings too. Possibly others, I don't pay too much attention to this space. We have multiple ORMs, one of which is being written by the maintainer of Rails' ActiveRecord. As for frameworks, we don't have a ton of full-stack ones, but a number of the smaller ones, iron, nickel, etc. I haven't explored email yet, but I know that there's some work there.
For servers, there's rotor and hyper. Database drivers, we have very good Postgres and MongoDB options, with some SQlite bindings too. Possibly others, I don't pay too much attention to this space. We have multiple ORMs, one of which is being written by the maintainer of Rails' ActiveRecord. As for frameworks, we don't have a ton of full-stack ones, but a number of the smaller ones, iron, nickel, etc. I haven't explored email yet, but I know that there's some work there.