I am currently working on these projects.
I am currently working on Power Stack, a boilerplate to get started with Gatsby and Drupal 8. You can have a look at the Github repo here: https://github.com/whiteskyweb/Power-Stack
Page builder for Drupal 8
A part of that work has involved creating a page builder for Drupal 8 which allows for much more user-friendly editing experience in Drupal 8.
Seaside Admin theme for Drupal 8
Beautify your site with Seaside Admin. I created the Seaside Admin theme for Drupal 8 to improve the UX and experience of using Drupal 8. Check it out for yourself at https://www.drupal.org/project/seaside_admin or simply run:
composer require 'drupal/seaside_admin:^1.9'