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.
attest autist adust
test wettest featest retest hottest attest fattest tautest phattest mutest wattest quietest detest whitest fittest latest neatest coattest cutest deediest gnattiest nattiest knottiest modest cattiest doughiest rattiest reddest reediest bawdiest maddest footiest goutiest seediest guttiest bittiest autist zootiest meatiest nettiest hoodiest dotiest shittiest chutist woodiest widest pietist matiest podesta ruddiest neediest duettist doughtiest lewdest ruttiest jettiest haddest muddiest gaudiest doest moodiest haughtiest deist pettiest quietist hootiest tidiest pottiest poutiest rowdiest battiest mitiest nudest baddest rudest nuttiest readiest modesty headiest testy outset testa outsit lutist fideist peatiest oddest beadiest sootiest rootiest fattiest faddiest loudest giddiest nittiest leadiest weediest outsat deadest saddest tost dottiest dowdiest tattiest whatsit whitiest wittiest chattiest shadiest shoddiest