- switch from one python interpreter (i.e. version) to another (including py and pypy)
- see all installed packages, and whether they are up-to-date
- install or upgrade a package, or upgrade pip itself
- create and delete virtual environments, and switch between them
- run the IDLE or another python script, with the selected interpreter
Also pip-Win is made available under the GNU Lesser General Public Licence.
You can try it from here.