www.awardspace.com www.50webs.com These are the best known to me... Are you asking about sites like wordpress.com? with blogs or jsut freewebhosting sites?
my fav free webhosting sites - http://byethost.com/ - www.awardspace.com you can also check http://www.free-webhosts.com/ for new free webhosting services.
http://www.t35.com/ Free hosting with PHP support and unlimited space/bandwidth and no popups/popunders/banner ads.
Zymic doesn't have such a bad deal. They have pretty good hosting but I think it maybe still in a type of "beta testing" stage still. It's worth a shot.