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.
leant lent lento lanate leaned lenite lenity lint lend lineate land lunt linty lunet landau linnet loaned lianoid lunette
leant meant ant dent santo bent genet tanto tenet senti paint centu jaunt sent went rant rente panto peanut qanat canto yenta shanty chanty tenty vaunt vent haint hant faint giant chianti cent cuneate kent neat lento manat haunt feint gent janty gaunt quaint quanta anti banty manta cant quant tent lineate menta canty lent aunt want hent kente anta ante taint daunt sente saint bento cento taunt pent rent scent pant chant chaunt riant shanti shent panty yente
lean leone plena plan glean clan elan lanai lane lawn lawny leno lain liane liana lien llano loan alan alane blenny flan clean glen plane ulan