Theo (t3.gg)

Theo Browne built 500K subscribers on opinionated web development takes — TypeScript, React, Next.js, and the broader JavaScript ecosystem explained with a specificity that goes beyond surface-level tutorials. In 2026, his coverage of AI coding assistants (Cursor, GitHub Copilot, Claude) from a practicing developer's perspective is the most practically useful tech content for engineers navigating the AI-augmented development landscape. The channel that talks to senior developers, not just beginners.