- Welcome to Birding.com, the best online resource for all your bird watching needs.www.birding.com
- Thayer Birding Software makes the top-rated birding software for Windows and Mac computers. Guide to Birds of North America includes over 2700 color photos ...www.thayerbirding.com
- Information on database and reporting software for North America and Worldwide birders.www.avisys.net
- Birding Software Wildlife Computing. Desktop PC, Pocket PC and Palm OS software for birdwatchers and other naturalists.www.wildlife.co.uk