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.
glooms gloms glomus gloams gliomas glums glams glims glimes golems gleams glumes cleomes coeloms coulombs galliums coelomes calms clams culms kilims kelims kalams clumsy climes climbs claims qualms calamus kaliums kalmias kalimbas
looms blooms glooms shaloms celoms loams phloems phyllomes holms cleomes coelomes coeloms gloams gloms glomus milliohms coulombs telomes gliomas sholoms
gloom gloomy glioma gloam glom