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.
bootery boater buttery battery biter batter butter betray better baiter bitter beater boudoir bittier battier batterie bider beader bettor bidder badder bawdry budder bedder bawdier beadier
bootery rooter cautery otter oater littery boater hooter nitery powter pouter eatery jotter jittery poetry toter rotter mooter watery cooter tottery quoter looter router dotter teary doter votary souter couter shooter mattery cotter rotary footier notary lottery outer voter noter hootier potter buttery rioter hotter pottery cattery rootier terry battery totter knotter chattery guttery touter loiter lotter sootier tooter footer dotier coater zootier goiter shouter try
bootee boot boite booed bootie booty boobed bot