GoLang: making Terraform Providers

 spaceapegames/terraform-provider-example: Code to accompany a blog post @GitHub

Creating A Terraform Provider - Part 1 | by Nathan Mclean | spaceapetech | Medium

spaceapegames/terraform-provider-wavefront: A Terraform Provider for Wavefront (https://www.wavefront.com/) @GitHub

Call APIs with Custom Providers | Terraform - HashiCorp Learn

Plugin Development - Depending on Providers | Terraform by HashiCorp