Article written for the publisher of my book, Drupal 7: Visual QuickStart Guide. I wrote it at a time when Drupal 7 seemed primed for imminent release, but it ended up taking a year more. The article is still fairly accurate, though.
I started writing it in 2009, then shelved it, then revised extensively in late 2010 as the pre-release software changed substantially. It was officially published about three weeks before Drupal 7's release.
This article compares the three CMSes in terms of user base, code maturity, richness of plug-ins, and business acceptance. Commissioned by Peachpit Press to support my recently published book, Drupal 7: Visual QuickStart Guide.
