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.
parians pyrans prions purins paranoias paranoeas purines piranas puranas pruinose porns pirns pyranose pereions prawns prunes prunus prince preens pornos prance pereons perrons pyrenes pyrones hyperons poorness pureness
parians saurians durians rins murrains groans burins hernias marranos morions roans ruins dourines taurines bruins furanes grans ranis currans carrions mureins merinos guaranas rinse terranes shorans chorines boranes turions triens purins trains birianis sereins lorans puranas prawns grains sarans cranes rains jarinas serins groins furans guaranis grins brines brans burans sciurines durions drains pyrans virions neurines reins carinas serranos terrains brains sarins brawns purines marinas prions farinas serines murines piranas heroins morrions brins marines terrines trans harianas trines urines mirins chorions shrines