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.
tailgate tailcoat tollgate delegate delegatee talked talcked delicate dialogued
tailgate vulgate tollgate legate legatee ligate falcate colligate relegate sulcate delegate delegatee