Gin is an HTTP web framework written in Go. Gin design is much out of Martini, another Go framework, however, with better performance than Martini. The Gin framework claims: If you need smashing performance, get yourself some gin. Gin-gonic helps developers to write less boilerplate code and build a request-handling pipeline.
Martini (https://github.com/go-martini/martini) is a framework developed with the Go language. Its modular and non-intrusive design makes the framework simple to use. However, please be aware that it's no longer maintained or supported.