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.
teensy teens tens tense tansy tennis tenues tenuis tenias tennies taenias townees tenuous dens tuns tins tons tans towns tones tines tunes dense denes donsy toons deans tynes tains tonus tunas tauons tonnes denies tenace donees tineas dienes dueness toonies donnees townies duennas tannoys tawneys tunnies tawnies tonneaus
weensy teensy ens sense foehns linsey lenos lenes peans benes miens kenos paeons hyaenas rouens veenas donsy mense lense scenes penis gainsay queans faenas yeans whens peins weans peons uneasy tens venus cense teens hygienes fens dense hens zeins hyphens denes veins means quinsy wheens jeans newsy leans paeans tansy beans gens nosy queens eons kens deans sonsy pens aeons nenes penes lenis scenas genus keens hymens menus pansy mensa reins liens dens wrens sensa lens tense neons peens unsay weens bens wens genes whenas sheens dienes hyenas yens
teen teeny ten taenia taeniae tenia teniae steno