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.
bleak black bilk bulk belleek balk bloke balky bulky baulk belga block baulky blocky beluga beylik belike bowleg beelike bowlike bullock bowllike bullocky bloc blog
bleak leak lek fleck laky lakh lake lack flake cloak clack kulak plack slack sleek tilak leaky leek leke flak ileac belleek cleek black gleek flack kulaki alack pollack leku slake flaky telega shellack
bale belay bile blae blah blaw blew blue bluey bola bole bylaw able