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.
toad toady tod tad toed tody today toddy tot ted dad tat tatouay toit teed tide dada dodo tout dado taut dead tidy data duad tate tote teat tied dita dato doat toot doody tatty dowdy daddy teddy ditto diode datto teiid wyted
goad load road toad woad ad od