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.
gall gally gal galley gale gaol gull call goal gala gayly calla galah golly gully gaily galea goalie callee galeae gulley callow gul caul glee glow kill kail coal calo kale cull gley glue glia colly quill kelly quale quail coaly guile koala cully coala quell gluey quoll
all ball fall hall call gall lall mall pall sall tall wall shall al