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.
senary scenery senarii senor snare sonar scenario sneery senior senora seiner sunray zonary saner sneer sinner sooner synura sunnier
nary binary unary canary denary hymnary senary quinary zonary denar laniary beanery manuary vinery kinara near snare knar gunnery henry hennery sonar onery denari winery tannery dinar pinery sunray deanery scenery knarry penury cannery anear gnar gnarr linear lunar knaur nunnery joinery finery venery shinnery
sen scena scene seen seine sene senna sewn sienna snaw season