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.
carte carate cart caret crate cared carat carrot caried curite croute karate quarte garote curate create curette kart crit curt garotte cowrote carroty carried cred cardiae card garrote cowrite garrotte curet cried karat cured cored cruet credo court creed quart caird grate crude garred cardio quarto cardia curred garret curried corrade corrode crowdie quarried cord crud curd grat grit grot
quarte carte art hearty carat bared oared party quart brute curate eared virtue baryte grate cart wrote cared airt ferrate berate neared muriate boart quarto write rote karate lyrate rewrite variate cerite sheared chart derate warty wared sortie trite terete serrate tarty tarot hydrate rared crate dart pared pyrite fart cowrite pirate seared garote roared rite rete forte geared arete peart cirrate irate rewrote deaerate laureate soared teared narrate tared chared aureate yperite heart hart aerate aurate rate hared caret carate mart aortae barde borate cowrote urate barite ferrite kart karat garrote curite create gyrate phorate verite arty orate fared shared feared norite part prate reared cerate seriate dared diorite tart torte wart shortie
car care carr carry acari scar scare scarey scarry scary