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.
dads dados dadas deads duads dadoes tads duds daddies doats dudes didos deeds dates dauts dawts toads ditas datos dodos dattos didies dodoes didoes diodes todays dauties teddies dowdies toddies toadies doodoos doodies dawties teds tats dits dots tods duits dites tauts ditsy doits deets tates duets teats dotes tides diets
ads lads chads wads tads deads roads rads naiads kneads meads mads loads leads quads bads goads gads cads heads fads beads pads reads dads duads toads woads shads