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.
degas degauss teguas decays daggas dogs tegs daks dugs digs dags dagos teggs dykes decos dekes dawks decks togas dikes dukes teaks dekkos decoys dagoes taigas doggies duckies dex dickies dickeys dexy docs tags togs tugs
degas gas ligase queasy legs kegs laogais gays goas gigas loggias agas megs bagass ragas sagas peaks segos negus daggas taigas teggs teguas wekas yogas regs leaks keas peags gags quaggas geegaws vigas gewgaws eggs egos reggaes biogas begs wreaks pegs saigas negs segs megass beaks gaes teaks tegs togas yeggs yugas