How to list installed Chocolatey packages?

choco list --local-only

Or:

clist -l

Source: https://chocolatey.org/docs/commands-list

This list all packages that are currently installed on your local machine, with version numbers.

λ  choco list --local-only
Chocolatey v0.10.8
7zip.commandline 16.02.0.20170209
(...)
41 packages installed.

Another alternative would be to install the official Chocolatey GUI application. This includes a tab which shows all the currently installed applications in your machine.

To install it, simply do:

choco install chocolateygui

The GitHub Repository for Chocolatey GUI can be found here:

https://github.com/chocolatey/ChocolateyGUI

And a screenshot of the UI can be seen here: