GraphQL Compiler
gqlc is a compiler for the GraphQL IDL
Simple
Just a single command line call and your mocking up a GraphQL service in no time.
Performant
Built using Go, it provides a single, statically compiled binary that run with much less overhead than NodeJS cli tools do.
Extendable
Doesn't support your language, no problem. Write or find a plugin and gqlc can use it as if it was builtin.