Echo vs Iris: What are the differences?

What is Echo? Golang HTTP server framework. Echo is a fast and unfancy HTTP server framework for Go (Golang). Up to 10x faster than the rest.

What is Iris? The fastest web framework for Go in (THIS) earth. The fastest web framework for Go.

Echo belongs to "Microframeworks (Backend)" category of the tech stack, while Iris can be primarily classified under "Frameworks (Full Stack)".

"Highly customizable" is the primary reason why developers consider Echo over the competitors, whereas "Fast" was stated as the key factor in picking Iris.

Echo and Iris are both open source tools. Iris with 15.1K GitHub stars and 1.59K forks on GitHub appears to be more popular than Echo with 14.2K GitHub stars and 1.28K GitHub forks.