To install conda packages while offline, use:
conda install /package-path/package-filename.tar.bz2
Packages installed by conda are found in the "pkgs" directory in the Anaconda installation directory.
You can also create a tar archive containing many conda packages and install them all at once:
conda install /packages-path/packages-filename.tar
Installing packages directly from the file does not resolve dependencies. If your installed package does not work it may have missing dependencies that need to be resolved manually.