The publishing system behind roughly four in ten websites — a 2003 fork of b2/cafelog that grew into the world's most widespread CMS. Its GPL licence and open plugin ecosystem have kept an enormous share of the web on free software foundations.
The Preservation Rating scores how well this entry is archived — not how good the software is. It's calculated automatically from what's already on this page: working mirrors, documentation, a reproducible build, a clearly identified license, and complete metadata. Nothing here is entered by hand; it updates itself whenever the entry changes.