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.
silent salient slant selenate selenite slanty sealant slainte salinity selenide solenoid soland
blent violent talent cholent relent lent silent volant gellant sealant polenta lunt gallnut leant alant blend flint coolant eluent walnut callant plant slant fluent lend elint diluent plenty salient lint relend blunt glint gallant client gillnet gelant lento telnet