Devdrasil is a very lean server side multiprocess plugin framework. It incorporates wwt for rendering. The name is an artificial word from "development" and "Yggdrasil".
try it
go get -u github.com/worldiety/devdrasil
go get -u github.com/worldiety/wwt
go build github.com/worldiety/devdrasil
./devdrasil -resources ~/go/src/github.com/worldiety -port 9090