WRFF 104.5 FM is typically the most listened-to rock station devoted to alternative music in the Philadelphia market. As of June 2010, Arbitron listed WRFF as No. 11 in the market with a 3.7 rating. WRFF has a comprehensive website to listen to live streaming of its programming, as well as many interactive games, contests and music news.
WRFF-FM
Radio1045.com
WXPN, home to Y-Rock, ranked as the No. 22 station in Philadelphia as of June 2010. Y-Rock's website contains a 24-7 online stream and also podcasts of daily programming. Y-Rock began after the demise of WPLY / Y100 (100..3 FM), which for 12 years was the alternative rock station in Philadelphia.
Y-Rock
XPN.org/yrock-on-xpn/home/
Dedicated to classic rock, 94WYSP offers alternative music primarily from the 1990s or before. Its website offers basic live streaming.
WYSP-FM
94wysp.radio.com
As of June 2010, WMMR 93.3 FM was the most popular rock station in the Philadelphia market (No. 8 in the Arbitron survey). Specializing in modern album rock, WMMR also plays a lot of alternative and indie rock. WMMR's website offers live streaming and a webcam, as well as blogs and show content.
WMMR-FM
WMMR.com