I think if you look purely at the numbers, the real reason TUIs are popular is claude code, everything else is background noise compared to it. What originally got me excited to build TUIs was the concept of delivering apps over the wire via SSH. SSH apps resemble a browser in that way: no local installs required. It's a major reason why I enjoy hacking on https://pico.sh -- deploying the TUI requires zero user invol…
I think the main driver was frameworks, available for a range of languages, that make it easy to create nice-looking TUIs (ratatui, textual, ink, etc.)