I'll start out with a longer one than usual, but I like this song. Frodus was a DC band that operated from 1993-1999, and rose again in 2009-2010. They played mathy hardcore. This is from a live show at the Black Cat Club in DC, I think in '99:
Philly's Doom Whore sounds pretty cool. This was put out in March 2014:
Interesting freak-out, from Argentina. Maybe a little Man Man-ish, and in Spanish:
Hardcore from Portland. These guys have a cassette demo you can order for $5:
Per the band's bandcamp page, this was recorded in one of their grandma's garage back in '07, I think the guitarist Sean, who is now in a band called Cumstain. I love it.
I think this is from Japan? It's cool: