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.
gauntry gantry gaunter country canter cantor gander kantar quintar counter quandary quainter candor contra qintar candour cointer contour
country gauntry chunter chantry wintery daunter sentry century punter bunter entry foundry vaunter haunter hunter counter gentry gantry gaunter laundry lientery mounter pantry reentry saunter sundry taunter wintry chaunter shunter