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.
geste gest geest gessoed gist hygeist jest hygieist jessed jesuit just
geste fiesta weest feist mestee beastie doughiest mustee caste moste cesti best jest fossate resit least neist besot feast east gest noisette heist costae gazette cete vest testae shiest chaste testy test deist zest wriest rest resat mozzette chest guest listee zoisite rosette poussette facete pastie hygeist pesto casette piste hest vestee haste vesta geest cuesta hessite paste beset stew setae baste nest lest resite caseate fissate stey siesta mozette coesite nauseate taste sate misate fest west gooiest fossette beast quest postie cassette pesty hygieist pest site reest wrest zooiest lysate chesty testee musette reset roseate cesta zesty doest testa waste cheesed yeast