I'm about to release v.2.0 of [DBSnapper](https://dbsnapper.com) which includes the subsetting feature. Works with Postgres and MySQL.

I have a prelease build (v2.0.0-alpha) available at https://github.com/dbsnapper/dbsnapper/releases

And I'm updating the documentation for v2.0.0 in real-time https://docs.dbsnapper.com. The new configuration is there, but I have some work to do adding docs for the new features.

Works with Mac and Linux (Windows soon)

If you're interested in giving the alpha a try, I'd love feedback and can walk you through any issues you might encounter.

Joe