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.
silane slain solan saline sileni solano salon solon xylan salina saloon solion sullen xylene zillion
lane alane tolane silane plane tolan glean lean loan clean lawn lain blawn llano byline elain aline clan beeline alone cauline villain kalian lallan milline plain eolian line lone reline towline ulan chalone hyaline clone blain flan cline bowline feline elan xylan solano valine liane violone callan lune aeolian delaine xylene jawline saline reloan alan colone guyline kaoline maline moline plan ralline solan slain uhlan ulnae choline yulan
sail scilla selah sill silly silo slaw slay soil sola sisal