Guides
Answer-first guides to the licensing decisions behind the checker. Every fact comes from the same reviewed dataset the tool runs on.
Copyleft vs permissive licenses The one distinction that decides most licensing questions, with all 16 licenses grouped by category and scope. Commercial-friendly open-source licenses All 16 licenses ranked by what they let a commercial product do — closed-source binaries, SaaS, and the notices you owe. Can I use GPL code in a commercial product? Yes, with conditions. What the GPL family requires per distribution model, version differences, and the AGPL network clause.