30 Boxes is a next-generation web-based calendar that'll be hitting beta later this week. Blogger Thomas Hawk got in on an early demo (along with a few other Web 2.0 notables like Matt Mullenweg and Andy Baio) and declared: "Best... Calendar... EVER!" In his long review, Hawk calls 30 Boxes "one of the most exciting social network tools I've seen in a long time" and reiterates Om Malik's sentiment that it "will be to calendars what GMail was to email."