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.
slatier slater saltier siltier sleetier slittier sluttier slider salter slitter solider soldier slotter saluter saltire soldiery zoolater solitaire solder sultry sledder salutary solidary solitary zoolatry
floatier platier slatier gleetier guiltier blatter alter leadier miltier vaultier latter elater pleater clatter realter salter siltier halter bloater blottier slittier zoolater faultier palter bleater flatter sleetier plater later gloater flytier violater joltier gladier floater maltier sluttier flutier falter plaiter platter plottier relater saltier slater dilater
slat saltie slate slatey slaty solate