Maybe the most complete free theme available

I’m VERY impressed. Blocksy is very polished and dead simple to use, yet incredible feature rich. As an owner of all major premium page builders, I’m baffled how professional looking and useful sites that can be made in no time, using just Blocksy and Gutenberg.

Update Nov 2019:

I started to migrate a site to Blocksy, and encountered just af few HTML validation and accessibility issues, at not only did Creative Themes reply to my support tickets within hours, they also fixed the issues in the latest update.

Just incredible.