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.
momus moms mumus momes mommas mommies mems mums memos memes mamas mumms maims mimes mamies mimosa mimeos mameys mambas mammas mambos mamboes mammees mammeys mammies mummies muumuus
momus oms mus comous muss doums ohms limbus mousy mums doms moms muse caeomas hummus humus looms foams homos mouse somas comes muumuus chymous nimbus whomso wammus poems tomes timeous rimous cymous nomos nomas zooms pomos combs ramous roms moues miaous gummous poms momes kombus emus iambus duomos roams biomes booms meous rooms domes soms bombs emeus ramus simious homes wombs mumus toms comas loams noms nomes nimious gnomes pomes amus wamus coombs famous bemuse awmous amuse dooms tombs shamus