Building a 500+ Product Robot Directory with Next.js, SQLite, and Zero API Costs

I wanted to build the "PCPartPicker for robots" — a comparison directory where buyers could browse commercial robots from different manufacturers, filter by specs, and request quotes. Here's how I built GrabaRobot with a surprisingly simple stack that handles 500+ products with zero API costs. Why Robots Need a Comparison Tool If you're a facility manager looking to buy a cleaning robot, or a warehouse operator evaluating AMRs (Autonomous Mobile Robots), you face a fragmented market. There's no central place to compare models across manufacturers. You end up visiting 20+ manufacturer websites, filling out contact forms, and waiting days for pricing. I saw the same gap in the B2B drone market, delivery robot space, and industrial automation. So I built a directory that covers 25 robot categories — from cleaning robots and delivery bots to palletizing robots and robot dogs. The Stack Next.js 15 (App Router) SQLite (via better-sqlite3) Tailwind CSS v4 Vercel (hosting) No database server.