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.
slit slitty slat silt slut slid slot salt sloid soldi solid slaty sleet salty slate slide sault silty slutty sallet sleety saltie solate solidi salute solute slatey sallied zeolite ciliate sullied sellout sild celt sled sold salad sloyd slued soldo soled zlote zloty
lit alit flit relit slit daylit tallit