Is this project abandoned? Is there an active fork of this repo?

[OscarVanL]

This is the second highest starred validation package in Go, but it appears there is no maintainer or activity on this repo.

I would use go-playground/validator (the highest starred validation package I could find), however it's not suitable for my use-case as I cannot define custom errors per field, whereas asaskevich/govalidator does support this.

Is there an active fork of this repo?

[marrow16]

Not sure what you're exact use-case is... but if you're validating requests and want define custom error messages then https://github.com/marrow16/valix may be of use