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.
peaced paced pieced passed paused peised pesade hypoacid posed pseud peseta pissed poised posada pseudo passado paucity
aced paced laced maced faced raced peaced razed lazed lased cased leased visaed riced dazed mazed diced pieced voiced gazed feazed juiced phased sauced hazed teased deuced tacet huzzaed iced diacid feased acid rased biased based ceased deiced recede disced fazed cedi eased hypoacid facet viced secede cede chased
peace pace pacey pacy peas pease piece apace space spacey spacy specie