Destroy All Software is the long-running technical-screencast publication of Gary Bernhardt, one of the most distinctive voices in software craftsmanship online. Gary is best known for the legendary Wat lightning talk on JavaScript / Ruby quirks and for his deeply opinionated, deeply rigorous screencasts on testing, type systems, and code design.
The CourseFlix listing carries three Destroy All Software titles: Web Framework from scratch (a from-scratch Ruby web framework implementation) and two Classic seasons covering the back catalog of Gary's screencasts. Material is paid and aimed at developers who want to think harder about the craft of writing software, not faster.