This is a list of PPAs for those of us who wants to avoid Flatpak and Snap.
Please if you know a PPA of your favorite application(s), add them to the list so others can benefit from it.
There's two list, an official PPA list which contains PPA from the developers and an unofficial list which are community based.
OFFICIAL PPA LIST
Google Chrome
Download the .deb file from here will add Chrome PPA: Google Chrome - Download the Fast, Secure Browser from Google
Inkscape
sudo add-apt-repository ppa:inkscape.dev/stable
sudo apt update
sudo apt install inkscape
Spotify
curl -sS https://download.spotify.com/debian/pubkey_0D811D58.gpg | sudo apt-key add -
echo "deb http://repository.spotify.com stable non-free" | sudo tee /etc/apt/sources.list.d/spotify.list
sudo apt-get update && sudo apt-get install spotify-client
Steam
Download the .deb file from here Steam adds its PPA: Steam, The Ultimate Online Game Platform
UNOFFICIAL PPA LIST
Cinnamon DE
sudo add-apt-repository ppa:embrosyn/cinnamon
sudo apt update
sudo apt install cinnamon
sudo apt install cinnamon-core
Deadbeef
sudo add-apt-repository ppa:starws-box/deadbeef-player
Gimp
sudo add-apt-repository ppa:ubuntuhandbook1/gimp
sudo apt update
sudo apt upgrade
Mesa
sudo add-apt-repository ppa:oibaf/graphics-drivers
sudo apt update
sudo apt upgrade
Unetbootin
sudo add-apt-repository ppa:gezakovacs/ppa

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Be earnest with you, I do not know the difference. I just wanted the latest version.

