The Habitable Exoplanets Catalog is an online database for scientists, educators, and the general public focused on habitable exoplanets discoveries. The catalog uses various habitability indices and classifications to identify, rank, and compare exoplanets, including their potential satellites, or exomoons. (this text is taken directly from the site’s introduction.)
The HEC ranked the exoplanets (and exomoons) discovered thus far by the Kepler telescope according to surface habitability and similarity to Earth.
This planet is ranked #1 by habitability according to the metrics used on the HEC site:
This planet is the most earth-like:
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