colin-i

/*
 system-monitor@ebbes applet
 
 Cinnamon applet displaying system informations in gnome shell status bar, such as memory usage, cpu usage, network rates…
 forked from gnome-shell extension (for gnome-shell 3.2) to Cinnamon applet by ebbes.ebbes@gmail.com
 Changes that were done:
    * Removed battery functionality
    * Removed tooltips (as they were crashing Cinnamon)
    * Implemented simpler tooltips
    * Some backports from gnome-shell 3.4 extension

colin-i

Manual installation step

Add the following two lines in the source (ex: /etc/apt/sources.list):
deb http://ppa.launchpad.net/colin-i/ppa/ubuntu noble main
deb-src http://ppa.launchpad.net/colin-i/ppa/ubuntu noble main
Replace noble with mantic, lunar, kinetic, jammy, impish, focal, bionic or xenial if needed. The packages are here https://launchpad.net/~colin-i/+archive/ubuntu/ppa/+packages
Add the gpg key and update:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys AF865B4744B5DC5D
sudo apt-get update