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.
pegs peags pugs pecs pigs pikes pekes pukes peeks pecks peaks pokes pokeys pekoes pokies piques piggies pics pacs paiks picas picks pikas pikis pixie pocks packs pucks pacas pyxie
begs kegs legs megs negs pegs regs segs tegs