This site is dedicated to tracking the orbits of exoplanets in relation to their Habitable Zones.
Summary plots for all of the exoplanets are available here.

Planets: 657   Systems: 529
Planets with orbits entirely within the Habitable Zone: 14
Updated: 2013 05 16 15:13:24 PDT

"The Earth is the only world known so far to harbor life. There is nowhere else, at least in the near future, to which our species could migrate. Visit, yes. Settle, not yet. Like it or not, for the moment the Earth is where we make our stand." - Carl Sagan