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.
visaing vising viseing vicing voicing fazing fusing facing feasing fessing fizzing fussing phasing feazing fuzing feezing fuzzing
visaing sing sang facing noosing mossing fazing guessing hoising liaising housing messing cussing lasing gazing massing teasing pacing using dazing mussing dossing rosing feazing sassing racing moussing reissuing issuing chowsing choosing wissing tossing dowsing dissing sousing ceasing rising rasing poising pausing hazing casing chasseing peising losing lazing kissing lysing easing viseing fessing busing phasing fusing bussing bowsing feasing fussing huzzaing mousing hosing jessing musing hissing nosing passing gassing guising causing noising bossing vising missing bousing basing biasing macing sanga suing posing peacing biassing goosing lacing leasing roosing reusing acing rousing mazing seising raising loosing lassoing razing pissing dosing lousing tawsing cessing tissuing tousing sussing wising chasing discing cheesing chousing dousing yessing