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.
wreak wreck wrack rack rake reck reek raki raku rakee wrick reeky rekey reggae rec reg rag ragg rick rock rook ruck ruga ryke raga
wreak raki teak wreck wrack reek reck raku rake beak rack peaky peak leaky leak beaky weak
area areae rear wrier urea ware wear weary were wire wore