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.
lobos lobs lowboys lobes labs libs lobbies loobies lubes
hobos gobos lobos kobos bos boobs boubous buboes fobs hoboes baboos lowboys cobs bios boss hobs abos bows niobous obas obis poboys robes sobas syboes taboos yobbos gobs bobs boos boas gibbose boys gibbous caboose booboos goboes jobs lobes cobbs lobs kobs mobs cowboys knobs nobs obes oboes ribose robs sobs doughboys yobboes yobs
lobo lob lobby lobe looby lowboy blob elbow glob globby globe slob slobby