I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
crakes cracks croaks creaks caracks carks corks crags karaokes carracks cricks crocks creeks crucks crooks cargoes carcase carcass cariocas curacaos curacoas carex crocs groks kirks cargos crocus gregos quarks quirks croquis garigues
rakes berakes drakes crakes brakes darks darkeys perukes burkes larks arracks freaks creaks carracks araks sarks reracks reggaes porkies narks rookies breaks barracks wracks birkies tracks trikes trokes warks sharks carks arks jerkies racks hayracks rakus marks rakis rykes croaks wreaks caracks parks eurokies karaokes cracks barks phreaks darkies brookies rakees rickeys rekeys quarks harks traiks troaks turkeys charks shrikes
crake crag scrag cark cork corky crack cracky carack creak craggy creaky crikey croak croaky curacao curacoa scraggy