Ask HN: Tool to summarise forks of a repo

Hi! Is there a tool to make sense of all the forks / most active forks from a github repo?

I'm playing with React, and I bump into all sorts of tiny repos that solve one problem (one-off components, scss stuff, icons, tiny npm modules etc)

These repos are not maintained all that well, which usually means at least a few people made forks with improvements, but didn't have the time/interest to PR back.

I would love a tool to see the most prominent forks with a summary of the most important changes. It won't be 100% automatic, but it can maybe check PRs, releases, do a README diff, or if all else fails, commit messages.

The goal is to help decide if a fork is worth taking over the main repo, and maybe in the long run, help people PR stuff back to master.