PDA Auctions - Has listings of auctions for Palm PDAs, Pocket PCs, smartphones, PDA projects and more.

PDAlive.com - Offers reviews, news, discussion, and more on many different PDA products.

PDAmd.com - Has news, reviews, columns, tutorials and more for PDA users in the medical profession.

PDATopSoft - Has Palm OS, Windows CE, Pocket PC, RIM, and EPOC Software and Information. Includes tips and tricks, news, FAQ and links.