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.
tots totes toits toots touts tootsy tits dots tuts tats tods tets tootsie titis toads datos teats tutus doats dotes doits tauts tates dittos dattos todies tutees todays tuttis tatsoi tattoos toddies tutties ditties titties toadies duteous tatties tedious tads dits tatouays teds tides duits dauts ditsy dites deets diets ditas dados didos duets dates dodos dawts
boots cots shoots tots dots soots roots pots oots knots mots moots lots loots coots bots jots hots hoots phots foots riots rots sots toots wots shots