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.
fruits frits frites fritts frets fritz frats forts farts ferities ferrites fortis frauds fortes forties verites ferrets fretsaw veritas ferrates verities faradise variates fords fards verts varieties farads virtus fiords vertus viroids virtues fordoes faradays faradize foredoes phorates virtuosa virtuose virtuosi virtuoso virtuous
bruits fruits raitas writes ruts routs routes rites ferrites riots writs verites hurts girts courts griots cruets grouts krauts lariats neuritis peritus yperites rewrites sorites dirts druids traits worrits shirts crits airts brits croutes brutes bruts burritos frites fritts barites britts frits veritas heriots iritis caritas cowrites curites grits kraits quirts merits norites pyrites reroutes cerites diorites droits territs trouts chariots yurts
fruity fruit ferity fraud fried frit fritt afrit