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.
solion solon slain salon solan salina saline saloon solano zillion silane sileni sullen
lion pillion solion bullion mullion jillion cullion billion zillion hellion talion million lin galleon colin moulin gallein lone blown kaoline billon cauline valine beeline byline eloin jawline halon violin pelon belon olein villein elain blini guyline realign hyaline shalloon chalone talon clone liny saloon saline reloan pylon lown gallon plain coloni linn align balloon kalian blain melon ballon loin villain alien malign feline nylon colon loan paulin loon bowline blin colony aloin alone cline phylon kaolin lien eolian mullein flown lain aline aeolian lino milline maline colone bouillon line moline clon clown gluon galloon felon felony ralline pleon reline salina salon slain solon violone towline choline hyalin yeelin
soli sol soil sola sole solei solo soul syli