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.
flaunt flaunty fluent flint flinty volant valiant volante felinity violent
flaunt flaunty slanty sealant pliant planet gallant callant gellant gelant volante volant valiant fluent eluent leant eluant blunt alant lunt lunet coolant plaint plant reliant slant diluent