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.
write writ rite wrote wried rate ride rete rote riot raita route retie riata rotte rediae roadie rat red ret rot rid rut rude rato read redo reed rode rout rede raid rued root rota roti roto redd
rite write whitey dite site wrote wried rote riot ride rete rate mite nite lite quite kite gite vitae boite writ bite cite suite white wite