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.
dolor dolour dollar tolar dealer dialer dueler duller tailor toiler toller tooler dallier deliria dialler dueller
color dolor jailor calory clour colour couloir gaoler volar poler pillory pylori solar valour sailor dolour tolar wooler molar valor velour cooler lory flour flora floor bolar bailor pooler fluor lour galore glory pallor polar lore tailor tooler choler
dol diol doily dole doll dolly doolee doolie dooly doula doyley doyly idol doodle