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.
boilover bolivar believer bluffer belfry
lover glover pullover allover clover plover boilover rollover solver slaver laver shelver salver delver clever silvery palaver culver clovery lever claver silver deliver louver wolver liver elver sliver shelvier