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

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/

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/

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/

Pocket Bird Recorder
Listing software for PocketPC and PalmOS devices.
http://home.surewest.net/bruwebb/Pocket-PC.htm

Wildlife Recorder
Software for keeping bird, butterfly, dragonfly, mammal, and other wildlife sightings organized. Features include report generation and voice sightings entry.
http://home.surewest.net/bruwebb/WildlifeRecorder.htm

Better Birdwatching
Videos and software for identifying birds in the western North America.
http://www.betterbirdwatching.com/

Wildlife Acoustics
Manufactures and markets the Song Sleuth digital birdsong detective, which claims to automatically identifies birds from their songs in the field.
http://www.wildlifeacoustics.com/