The Habitable Exoplanets Catalog (HEC) is an online database for scientists, educators, and the general public focused on potential habitable exoplanets discoveries. The catalog uses various habitability indices and classifications to identify, rank, and compare exoplanets, including potential satellites, or exomoons. Check the NEWS section for news and updates. A full database of exoplanets is available in the DATA section. The catalog is updated as new data is available. Latest entry is Gliese 581g.