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.
tracks traiks trucks trocks troaks tricks triacs turacos tricksy treks torcs turks touracos turacous drecks tarocs trikes trokes taroks torics tragus drakes turkeys turkois teargas troikas derricks dirks trugs darks dreks trogs trigs drags dorks trigos darics drouks durocs terraqueous darkeys darkies torques turquois
racks reracks carracks tracks wracks barracks hayracks caracks cracks arracks wricks rakis wreaks crucks bricks touracos ricks croaks crocks quarks arcs darks narks seracs larks crakes narcs ruckus marcs derricks berakes creaks recks cricks maracas turacos pricks charks rocks parks barks rakus freaks drecks triacs wrecks hayricks marks brocks phreaks breaks rakes carks frocks tricksy trocks harks arks rucks araks brakes sarks drakes traiks tricks troaks trucks warks fracas sharks
track torc traik triac trick trickie tricky troak trock truck turaco turacou strake