I'm a big fan of Golang. I use Golang in most time. In addition, The most software projects of me are written by Golang.
MySQL with InnoDB is a good all-purpose storage software.
Atom & VSCode are good enough for Golang coding.
I save my private project to own GitLab.
I used HAProxy as HTTP request dispatcher.
I used Consul as config center & service discoverer.
Bamboo + Marathon + Mesos (+ Docker) => awesome tool set to building PaaS.
I used etcd as high availability KV storage.