I haven't tried most of these, just borrowed this list from Gareth on the Wrrior forum:

www.clickbooth.com

www.cpaempire.com

www.filinet.com

www.modernclick.com

www.cj.com

www.linkshare.com

www.shareasale.com

www.adteractive.com

www.azoogleads.com

www.adreporting.com

www.primaryads.com

www.filinet.com

www.affiliatefuel.com

www.cpaempire.com

www.revenueloop.com

www.affiliatecop.com

www.login.offerweb.com

www.darkblue.com

www.clickexchange.com

www.affiliatewindow.com

www.performics.com

www.clixgalore.com

www.clickbooth.com

www.paidonresults.com

www.shareresults.com

www.trafficsynergy.com

www.linkconnector.com

www.cj.com

www.linkshare.com

www.theaffliliatewindow.com

www.valueclick.com

www.leadhound.com

www.shareasale.com

www.offersquest.com

www.affiliatenetwork.com

www.commissionsoup.com

www.cyberbounty.com

http://go.envisionads.com

www.fineclicks.com

www.turn2offers.com

www.directleads.com

www.bulletads.com

www.floppybank.com

www.primaryads.com

www.modernclick.com

www.adfish.com

www.abcleads.com

www.adsmarket.com

www.checkmystats.com.au

www.leadcreations.com

www.leadclick.com

www.cpajunction.com

www.revenuegateway.com

http://rextopia.com

www.cpastorm.com

http://leadermarkets.com

www.fluxads.com

www.hydramedia.com

www.bluelithium.com

www.primeq.com

www.affiliatefuture.co.uk

www.rocketprofit.com

www.affiliateer.com