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.
togs togas togues dogs tugs tags tegs tacos tokes teggs tokays toques teguas taigas doggies digs tics dugs dags docs tacks teaks ticks tikes tikis degas decos docks takes takas dagos tucks tykes
biogs bogs fogs hogs jogs cogs logs mogs nogs dogs togs wogs shogs