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.
kombus combs combes coombs koumys comous gombos koumis combos koumyss coombes koumiss goombahs goombays comes kames gambs comas kumys comose gambas gumbos gambes commas kumiss caeomas commies cumbias gambias gummous
iambus nimbus limbus kombus mus limbas bums emeus jambes imbues iambs gumbos gambs hummus muss gambes gombos lambs momus limbos mambas humus mumus coombes combos ramous rimous cymous sambos dumbos tombs wammus wombs chymous combes emus combs bombes muumuus comous muse awmous amuse amus bemuse gummous coombs bimbos jambs famous bombs limbs gambas mums ambos jumbos mambos numbs ramus rumbas sambas zombis dumbs umbos wamus chimbs shamus