EventNation.com
A directory which allows people to find, post, and discuss upcoming events. Topics range from concerts to car shows to industry conventions.

JamBase
JamBase is a database of band and concert information about jams across North America.

RockRage: Concert Information
The latest tour dates and venues for some of the most popular rock acts.

Dirty Linen Gig Guide
North American tour schedules for folk, world, and roots artists. Searchable by artist name or by state/province.