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.
closes calloses clozes callouses glosses classes clauses colossus glossies coleuses calluses cullises gallowses glozes colessees coulisses calces glossas calyces calices culices classis calesas glasses glassies galluses coalesces colzas galleasses galliasses glaces glasshouse glazes
loses xyloses closes looses calloses galleasses glossies pulses colessees pleases glasses palsies gallowses lyses malaises delouses calluses plusses clauses coulisses molasses glassies louses lessees teleses tallises dialyses ileuses paillasses jalousies losses releases loesses flosses balases blouses boluses floosies flossies phyleses classes jealousies falsies coleuses leses galliasses coalesces glasshouse glozes galluses pluses palliasses glosses plisses realises soleuses blesses liaises aliases clozes cullises callouses valses leases lasses bolases phalluses blisses pelisses lases lassies valises lassoes dulses taluses biolyses challises
close calos class classy cloys cloze colossi cols gloss glossa glossae glossy