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.
shuls shauls shills shoals shales shools shiels sheols shells sheals shawls sheilas shallows shoeless sials chiels chills shoelace
shuls hauls bulls fouls coulis fulls ghouls fuels puls souls rules dahls pulis nulls duals mules dulls mauls tules lulls wauls gules hols guls buhls hulas pules caulis caules cauls jouals hulls joules pulls sauls pulse sulus mulls boules doulas miauls duels lulus dulse kohls ulus culls shauls gulls yules
shul shale shaley shall shallow shaly shaul shell shelly shill shily shyly schul