A-Z Prague Guide
Guide to music, theatre, dance and film in Prague.
http://a-ztravelguides.com/world/europe/czech-republic/prague/culture.html

Bohemica.cz
Czech culture guide and forum.
http://www.bohemica.com/

Czech Opera Server
Find out which operatic productions are playing in town.
http://www.czechopera.cz/
http://www.opera-rkm.cz/operagala/

PIS.cz
A monthly guide to cultural events in the city.
http://www.pis.cz/a/culture/cult_menu.html

Prague Cultural Programs
Year round guide to performances at major Prague venues including theatres and concert halls.
http://www.andel3w.dk/prague/english/pragun11.htm

Prague Music News
Music resource.
http://www.sdmusic.cz/uk/index.htm

Prague.tv
Online events guide.
http://prague.tv/events/

What's on When.com
Up-to-date and searchable guide to what's on in Prague.
http://www.whatsonwhen.com/partners/amadeus/page.asp?file=prague