Sub Pop Records
"Going out of business since 1988." Sub Pop Records was lucky enough to sign key grunge acts like Mudhoney and Nirvana as they rose to huge commercial success. Site features complete profiles of their past and present clientele.
Wikipedia: Grunge Music
Wikipedia provides an in-depth look at Grunge music's metal and punk influences, enormous commercial success, and then rapid decline as songs like Nirvana's "I Hate Myself and I Want to Die" started to seem a little mellodramatic.
This grunge music streaming internet radio station offers a lofi or hifi feed and many free song downloads.
Allmusic outlines grunge music's simultaneous relationship to heavy metal, punk, and the emo style, and provides links to info about top artists like Alice in Chains, Nirvana, and Mother Love Bone.