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.
sheller shellier chiller shalier shoaler chillier shoalier choler cholera
fueller teller heller queller yeller dueller seller feller sheller shellier bullier mewler celery dueler raillery kneeler hellery culler cellar poller realer toller filler heeler taller gallery chillier sealer woollier wheeler tailleur duller dallier siller biller caller huller belier giller baller eelier healer hillier killer tallier loller sallier dialler holler puller rallier veiler pallier fuller iller knoller hiller helleri peeler millier tiller jollier ceiler luller muller fueler feeler faller collier sillier dealer roller relier vealer miller willer chiller fullery reeler
shell shelly shall shallow sheal sheila sheol shiel shill