Bands United
Open to students in marching and concert bands, Colorguard, dance team, jazz ensemble and orchestra. [Yahoo! Groups]

Marching Band Planet
Online community providing discussion forums, news, calendar, and articles.

Marching.com
Comprehensive source covering high school events, competitions and scores. Includes links to resources by topic and bands organized by state and country.

MarchingArts Directory
Comprehensive listing of all the marching arts on the web.

Marchingband.net
Portal with music theory tests, photographs, forums, and guestbook.