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.
slogger slugger slaggier slaker sulker silkier slacker sleeker slicker sulkier sleekier
logger blogger flogger clogger slogger lagger leggier loggier lugger flagger flaggier cloggier plugger slaggier slugger dialoguer