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.
araks arks arracks arecas arkose arcs arcus argus argosy argues
araks virgas forks breaks traiks porks carks barcas barracks berks sarks groks freaks creaks quarks arracks burkes brags markas barks merks arks warks shirks charkas troaks teargas orcas birks parks murks larks chirks dreks berakes zerks jerks dirks corks drags crags hayracks irks racks crakes marks brakes burqas wreaks quirks croaks phreaks kirks rags harks rakis wracks carracks reracks treks burkas frags rakus seracs mirks lurks drakes cracks dorks caracks darks rakes taroks sharks narks works perks borks parkas tracks turks charks yerks