I Built 8 Production SaaS Apps with $0 Infrastructure — Here's My Playbook

TL;DR Over the past year, I built and deployed 8 production web applications — all running on free-tier infrastructure. No credit card charges, no cloud bills, no compromises on quality. Here's every tool I use and exactly how I do it. Why Zero-Cost Matters I'm a self-taught developer from Turkey. I don't have VC funding or a company credit card. But I wanted to build real products — not toy projects, not tutorials, not "coming soon" landing pages. Real, deployed, working applications that solve real problems. The constraint of $0/month forced me to be creative. And honestly? The free tiers available in 2025-2026 are insanely generous. You can run a legitimate SaaS business without spending a cent on infrastructure. The 8 Projects Here's what I built, in chronological order: OpsFlow — Incident Management Platform The most ambitious one. Microservice architecture with 3 separate repositories: API (Express.js + TypeORM), Frontend (React + MUI), and Notification Service (Kafka consumer +