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.
scenery seiner senary sneery saner scenario senor sneer sinner sunray senora sooner senior senarii sunnier sonar zoner synura zanier zonary
venery scenery beanery henry hennery vinery veneer veiner onery senary genera deanery denier teener tenner weenier wiener sheenier finery joinery gunnery penury leaner meaner nunnery penner pinery cannery keener seiner sneery denary tannery teenier weaner weiner winery shinnery