Free data modeling tools
9 of the 12 data modeling tools on NoCodeTools have a free plan. They're listed by the price of their cheapest paid plan, lowest first, so you can see what upgrading costs. Prices checked Oct 30, 2026.
Only tools whose main category is Data Modeling are listed; the full category list includes tools that also fit here.
Open-source platform for building databases and apps visually.
Free plan · From $10/user/mo (yearly)
CRM and data management platform with AI integration and automation
Free plan · From $20/seat/mo (yearly)
Open-source backend platform with database, auth, and real-time APIs.
Free plan · From $25/mo
Prices are the cheapest plan each vendor lists on its own pricing page, checked by hand or read from that page. Each tool page links to the page we checked and the date. Vendors change prices, so confirm on their site before you buy.