Farnam Street (FS) provides timeless lessons on decision making, thinking, and continuous improvement through a newsletter, podcast, and books written by Shane Parrish.

Untools is a curated collection of thinking tools and frameworks for decision making, problem solving, and systems understanding, used by professionals seeking better mental models.

David Kadavy is a bestselling author and podcaster sharing insights on creativity, productivity, self-publishing, and mental models for creatives.

The Knowledge is a newsletter and course providing insights and frameworks from philosophy, psychology, and business to help driven people think deeper and work smarter.