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.
snared snored sneered snort senorita sonority
neared snared aneared unaired donnered sneered panniered bannered reynard pioneered monarda minaret gnarred knarred nard nereid enured honoured inured canard laniard mannered manured veneered minored snored poniard tenured honored unread
snare senarii senary snore sonar sunray