dpkg -l
lists all the installed programs on a Debian apt based system. There are too many to list all and many are built in system commands.
Below are some that I highlight for interest and future reference to easily find on reinstall.
I have been using the Python package management software pipx.
pipx installation and usage notes
Some python packages:
Current installed Flatpaks can be listed with flatpak list
. Many of the packs installed are dependency packs. Below are key packs that I am using: