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.
wrest wriest rest reest wrist reset resat resit wristy resite reseat rust resid roast roost rusty recit roset resod roust russet reside reseed reused resaid reseda recite residua residue risotto roseate rosette russety reissued
rest wrest reest gest neist least guest hygieist beast cuesta rust geest pesty heist hest resit resat wriest cesta siesta zesty deist doughiest testa weest chest shiest vesta pest geste feist besot nest lest quest jest hygeist gooiest pesto best beset east feast vest reset fest fiesta wrist cesti zest zooiest doest test testy west chesty yeast
res resow wires wars tressy tres dress prese ores cress ares wries wrasse rues roes reuse resew rees resee reseau resay resaw reissue reis ires cressy presa press dressy tress wares warsaw worse