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.
brittly brittle brightly brattle brutely bridally broodily brutally bridal bridle brutal broadly buirdly biradial bordel bradawl
brittly rattly ruttily brittle fruitily grittily prettily tritely
britt brit barite bratty bruit