Once you block out the vendors, you can find Big Brothers/Big Sisters of the Columbia NW, Elder Resource Center, Mult Co Health Service (free testing), ACLU, Lambada Legal, Domestic & Sexual Violence Queer Caucus, Rainbow Al-Anon, Planned Parenthood, Cascade AIDS Project, YWCA and of course the Q-Center.
And then there was also the queer rugby team, PDX Pink Pistols (the gun group), the Adventure Group, The Ruby Red Flippers (the diving group), Oregon Bears (grrr), Pawsitively Pitbulls and many others that were just there to promote more community than commodity.
It takes some searching but there is heart down there. I would urge people to check it out. I've had my issue with Pride before but I can see its benefits. Also, the Pride Parade tomorrow (June 15th) starts at 11am downtown.