AviSys Birding Software  
   Information on database and reporting software for North America and Worldwide birders.
   http://www.avisys.net/

Thayer Birding Software  
   Popular bird identification and record keeping software, with newsletters, discussion group, and checklists.
   http://www.thayerbirding.com/

Pocket Bird Recorder  
   Listing software for Windows CE Palm-PC computers.
   http://www.rcsis.com/users/bruwebb/palmpcpo.htm

BirdBase Plus BirdArea  
   Database for entering your worldwide sightings, plus lists of the birds of any major world area.
   http://members.aol.com/sbsp/

Flying Emu  
   Map List software for North American and world birding lists, plus many links.
   http://www.flyingemu.com/

BirdSong Bytes  
   Photos and songs of 136 common birds of Eastern North America.
   http://www.birdsongbytes.com/

NatureWare  
   North American Birds by Sight and Sound software.
   http://www.natureware.com/

Birding Database  
   Software for recording sightings and producing lists. Multimedia capability; Western Palearctic and World lists.
   http://www.birdsoftware.co.uk/

Bird Songs International  
   Detailed descriptions of CD-ROMs Birds of Bolivia, Birds of Venezuela, and Birds of Tropical Asia.
   http://www.birdsongs.com/

TweetChirp Assistant  
   Plays bird calls and records sightings on a Windows CE based personal organizer.
   http://www.tweetchirp.com/

The Birder's Notebook  
   Database with capability to catalog photos, videos, and sounds with each observation. Creates multimedia checklists. Demo CD available.
   http://ggsoftware.home.att.net/BNotebook.html

Wildlife Computing  
   Bird Recorder 32 and Pocket Bird Recorder programs for keeping track of sightings of birds, butterflies, and dragonflies.
   http://www.wildlife.co.uk/

Lanius Software  
   Products include the North American Bird Reference Book CD-ROM and Lanius Excalibur Bird Life List Utility.
   http://www.onmymountain.com

EnjoyBirds  
   Information about this digital illustrated guide for identifying birds and bird calls of North and Central America, Hawaii, and the Caribbean.
   http://enjoybirds.com/

Syrinx  
   A program for spectral analysis, editing, and playback of bird sounds.
   http://zipprong.psych.washington.edu/

Eremaea Birds  
   On-line personal bird listing with access to a global database.
   http://www.eremaea.com/

Wings  
   Macintosh OS X software for managing bird records in a relational database.
   http://homepage.mac.com/wings_4d/

Aves Bird Watcher's Log  
   Software for Windows includes world bird list, image collection, trip log, daily diary, and club members list.
   http://birdwatch.idealog.net/

Redshank Software  
   Information on Avendex, a bird sightings database and analysis program for North and South Carolina (Windows and Mac); ClipBird checklist utility.
   http://www.redshanksoftware.com/