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.
sonar snare zonary sooner senary senarii scenario senor zoner saner snore sneer senior sunray sinner seiner synura sneery senora scenery sunnier synurae
sonar gnar toner dinar denari zoner sooner snare mooner lunar linear quinary kinara goner canary honor boner gnarr binary anear near nary knaur knar loner hymnary senary honer zonary denar denary donor unary
son snaw sone sonny soon sown zona zonae