Keppler rhymes with:
kepler, epler, eppler, hepler, heppler, kepler, peppler, shepler, weppler, coupler, doppler, epler, eppler, hepler, heppler, hippler, kappler, kempler, kepler, krempler, oppler, peppler, poplar, sampler, shepler, stempler, templar, wampler, weppler
Keppler sounds like:
kabler, kapler, kappeler, kappler, keebler, kepler, kevlar, kibler, kobler, koffler, kofler, kubler, kuebler