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.
distill distil distally distal dustily diastole tastily testily deicidal diacetyl tacitly
still distill chestily tastily hastily pastil stile stilly stull bastile bastille stall feistily pistil fustily gustily lustily mistily mustily nastily pastille rustily distil hostile zestily dustily testily yeastily