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.
gouts guts gutsy goats gats cots goatees cuts gods goods gudes goads coots gowds gates gaits gauds coats quits cutes kotos cutis guids cotes quiets cottas cuteys quotas kotows quoits cutesy guides coitus quotes coatis cuties goddess cutties goodies gaudies cutesie gateaus cooties quietus kowtows coatees gaieties cats cods cuds gads kats kits qats
bouts louts shouts touts gouts outs routs pouts knouts uts botts lotos mots votes butts motes knots coots lotus odious huts lutes hideous rotis beauts cots loots luteous phots shotts rotos lotas nuts vodous utas boats putts oats douse lots cotes suets shutes shotes shoats chotts jots tots tootsy toits tauts duits dots doits dauts soots ouds tuts rotas hots mutts boots autos riots jotas footsy pots cutis modus mutes mauts kotos poets rots photos butes botas quotas nodous beauteous piteous sots nodus suits notes goats potsy foots iotas jutes phuts cuts coats fatuous quotes juts nutsy cutes moots biotas quoits touse bots sautes guts nowts quits puts ghauts hoots gutsy roots moats muts routes rotes buts ruts iodous doats riotous duets dotes duteous tedious toots totes motts tutus utes setous wots chutes shoots shots oots shuts
gout gouty got gut couteau goat goatee gutta guttae gutty agouti agouty