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.
daymares damars dammars dammers tamaris tamaraos tamaraus dimers tamers demurs tamburs timbres dimmers dimerize dimerous tambours tamburas timaraus tambouras timers tumors
daymares mares mars chimeres mures timbres smears mores ambaries cymars mimbars lemures immures hombres embars bemires sambars marse mires maras mairs maars lumbars ombres samaras simars summaries dammars meres damars tamaris chimars shmears