Personally think https://getkirby.com is the entry to beat but I guess it’s just because I’m used to it and it works incredibly well for my use case.
https://devboard.gitsense.com/getkirby/kirby
https://devboard.gitsense.com/getgrav/grav
Historically speaking, grav is more popular as it had over 2000 contributors, compared to kirby which is about 500.
Full Disclosure: This is my tool
So looking at git activity is not really all that useful.
I do want to make it clear that Kirby is a very healthy project, if anybody is misinterpreting the data.
I'm lightly looking into alternatives to WordPress. Obviously CraftCMS come up, but being a paid product - nothing work with that per se - does limit its appeal for some projects / client. So maybe there's a place for Kirby?
Plus the product itself is incredibly good and it’s getting better and better over time.