Here is a NASA application called Eyes on Exoplanets that allows you to explore the exoplanet database, including all the Kepler discoveries. (Requires a download and install to run.)
Here is a beautiful visual summary by astrophysicist Alex Parker of over 2,000 high-quality planet candidates identified by the Kepler Space Telescope, visualized as if they are orbiting a common parent star. This gives you a sense of the wide diversity in size and orbital characteristics.