How I run multiple $10K MRR companies on a $20/month tech stack

A bootstrapper shares how they run multiple profitable SaaS products on a $20/month tech stack. The playbook covers using a cheap VPS (Linode/DigitalOcean) instead of AWS, Go for lean statically-compiled backends, SQLite with WAL mode instead of Postgres, local GPU inference via Ollama/VLLM for batch AI tasks, OpenRouter for frontier model access with automatic fallback, and GitHub Copilot over pricier AI IDEs. The author argues this approach gives unlimited runway and eliminates the need for VC funding.