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.
telnet talent taloned
gillnet telnet walnut slant alant talent silent relent planet glint gallant callant linnet lint lunet lunt sealant ballonet blunt blent elint flint violent volant gelant gellant coolant gallnut kilned plant lent cholent