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.
nerol neroli nearly neural neurula nurl narrowly neurally neurulae gnarl knurl gnarly knurly narial
nerol aureole parole neroli queerly merle role roll creole areole areola aureola ceorl pyrrole droll pyrola triol prole cheerly pearl reoil broil ferly parol roil growl merl carol herl caroli feral earl beryl reroll pyrrol seral prowl drool peril troll payroll sheerly