Evil Martians: Ruby on Rails Startup StackRuby on Rails is the best startup stack. Garry Tan, YC’s president, is building and evangelizing Ruby on Rails and Claude Code. Intercom’s AI agent Fin resolves 1M+ tickets per week on a 2M-line Rails monolith. bolt.new hit $40M+ ARR on a Rails backend. Chime, Figma, and Omada Health, all built with Ruby, had IPOs in 2025. NexHealth hit a $1B valuation on Rails. Thatch—founded by ex-Stripe enginee
