KnowThen (knowthen.com) is the long-running teaching brand of James Moore — known for unusually clear introductory courses on functional-programming-leaning languages and frameworks that the wider course market doesn't cover well.
The CourseFlix listing carries three KnowThen courses: Elm Beyond the Basics (the functional front-end language), Elixir & Phoenix for Beginners (the BEAM-based back-end stack), and HTMX + Django — Modern Python Web Apps, Hold the JavaScript (the server-rendered alternative to SPA architectures).
Material is paid and aimed at developers exploring the alternatives to the dominant JavaScript-and-React-everywhere paradigm. For broader content, see CourseFlix's Elixir, Elm, and Django category pages.
