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.
knots knouts nowts knits notes nods nuts nets nits newts nates neats nites nodus gnats nodes netts nutsy kneads nodose nodous notice noddies
knots loots kotos cotes tootsy rotas moats phots hoots iotas rotis knouts quotas knits nits photos goats coats nuts votes oots biotas wots shotts shoats tots toits potsy jotas riots poets notes shotes dotes hots rots lotus soots motes doats motts lotos lots boats gnats oats coots gouts foots nods footsy quotes nets boots lotas bots bouts moots rotes totes cots quoits botts rotos outs nowts doits mots sots louts routs botas dots shots pots chotts roots jots pouts toots touts shoots shouts
knot knotty not knit knout nota note nowt kent kente snot snotty