Online Tours

Foundling Museum audio tour created by local teens: http://www.foundlingmuseum.org.uk/Audiotours.php

MoMA WiFi - http://moma.org/wifi/ (via iPhone/iPod Touch).

NY Historical Society pod/vodcasts https://www.nyhistory.org/web/default.php?section=whats_new&page=tour (some created by local teens)

SJMA Interactive Guide - http://www.sjma.mobi (via iPhone/iPod Touch).

Tate Modern Gustav Klimt Tour - http://www.tate.org.uk/liverpool/exhibitions/gustavklimt/tour/iphone/#home (via iPhone/iPod Touch)

Getty Modern Outdoor Sculpture Audio Tour - listen via phone, online media player, download, iTunes/RSS 

On-site Tours

Audio tours

Cellphone tours

Smartphone tours

Multimedia tours

Podcast tours

Downloadable tours

Mobile Tour Vendors' Client Lists

Antenna Audio

Espro Acoustiguide

Guide by Cell

Guide ID

Museum 411

Narrowcasters

Nousguide

Ophrys

Soundgarden

Sycomore