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.
marmite marmot mermaid
marmite termite remit eremite fermate formate furmity hermit permit permute chromite
maremma maremme marimba smarm smarmy