Sketch Repo - Collection of resources for anyone who uses Sketch
Vidrio - Holographic screencasting app for Mac. Free for COVID-19
Build with Sketch - Free LEGO-like kit for Sketch
Scrimba - Interactive coding screencasts created in an instant
Icon Slate - Icon Slate lets you easily compose, import and export desktop icons in many formats.
GoRails - Ruby on Rails screencasts for Web Developers