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.
hysons sons sonsy sones sonsie scions sonnies suns sans sins sense sines snaws zones sensa sunns sinus snows zoons cions sains sanes saunas sunnas seines sennas scenes sinews scenas sanies sansei sensei sanious siennas sinuous
sons hysons ons pons fons moans goons coins monos sonsy hons ones toons phones moons donas kaons nonas knowns noons conus hones wons tons donsy zones owns johns peones ions pions joins lions quoins roans phons phonos bones scions sones tauons loins conns cons nouns neons bonus nones muons koans mons suns foins paeons leones coons monas zoons loons onos onus cones eons sins sans fohns loans poons gowns aeons pones cions boons dons downs jones tones tonus peons towns yonis