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.
goads gads gods gauds goods gadis gowds goats gaddis cads goddess cods goodies gats gaudies goatees kadis qadis guids cadis quods gouts gudes cades codes coeds quads caids qaids gaits gates coats codas coatis quotas guides cottas caddis koodoos gateaus caddies codeias coatees gaieties cats cots cuds guts kats kids qats
goads loads roads toads woads ods ads lads feods kneads mads moats quads geoids cades nadas modus wads cods bodes coats qadis gads fados quotas wades jotas fades voids odes beads ados nods ouds bods odds rodes sods yodhs hyoids shads chads woods reads toeas duads doats deads dados zooids sades jades saids nodus roods goats poods raids leads bawds pads gowds hoods geodes modes gauds bads quods heads hades nodes oats codes qaids maids padis bauds naiades sadis aids fads hods boats lodes iotas gods lauds loids tads mauds gadis cadis codas coeds dodos cads odas naiads rotas lotas goods pods caids readds rads meads kadis rods biotas moods sodas foods stoas lades dadas mods dads diodes botas tods wadis adds woodsy shades shoats yauds yods
goad gad god gaddi gadi gaed gaud gaudy goat goatee good goodie goody gowd egad