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.
amahs amas amass amias aims amis amus amaze ambos amies amiss ammos amuse awmous
bimahs amahs mas masa maes comas mays hamzah gamas limbas lemmas lamas goombahs gambas camas loumas maws mamas mammas nemas pneumas pimas rumbas sambas somas zamias doumas shamas mass moas amas llamas zymase cymas simas omasa pumas mommas nomas lumas mambas amias gammas summas limas dumas caeomas lamias amass gummas biomass hyphemias gamays bimas commas bemas camass shammas