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.
tripos trips tripes traipse drips turps traps tarps trappous trappose tropes trapes troops troupes towropes drops dorps dropsy drapes droops drupes hydrops trapeze hydropsy trapezia trapezii
tripos croupous charpoys grips trappous repose ripes rips euripus cripes repos reoppose gripes mariposa propose purpose drips traipse trappose tripes trips chirps
trip tripe trippy drip drippy tarp trap trop trope atrip strip stripe stripy