Beautiful Web Type is a small, hand-curated guide to open-source typefaces, rebuilt in 2018 to focus specifically on open-source rather than just 'free' fonts.
It documents the full weight range, glyph set, and OpenType features for each typeface, plus suggested pairings, which most free-font lists skip entirely.
Good starting point if licensing certainty matters more than having thousands of options to sift through.
Because the whole premise is open-source only, commercial use is generally safe across the list, though it's still worth glancing at the specific OFL, Apache, or MIT terms on each typeface's own page.
Guide to only the best open-source typefaces.
