You can just type “conda search” which will give you something like the following.
$ conda search Fetching package metadata ......... affine 2.0.0 py27_0 defaults 2.0.0 py35_0 defaults 2.0.0 py36_0 defaults alabaster 0.7.3 py27_0 defaults 0.7.3 py34_0 defaults 0.7.7 py27_0 defaults 0.7.7 py34_0 defaults 0.7.7 py35_0 defaults 0.7.9 py27_0 defaults