What Application Indicators are available?

System Load Indicator

Category: System Information

Network, memory and cpu usage indicator; this is a port of the original System Monitor GNOME Panel applet (gnome-system-monitor applet).

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In Preferences you can customize the output to fit it to your desktop theme:

preferences dialog

To install:

You can install it through the Ubuntu Software Centre by clicking this button:

Install via the software center

or through the command line:

sudo apt-get install indicator-multiload

If you want the latest updates, you can install it from the PPA with these commands:

sudo add-apt-repository ppa:indicator-multiload/stable-daily
sudo apt-get update
sudo apt-get install indicator-multiload

StackApplet

Category: Other

StackApplet is a GNOME panel applet that monitors your activity on any StackExchange site.

stackapplet

stackapplet Install stackapplet in Ubuntu Software Center


For Ubuntu 12.04 to 14.04:

Get the latest version as follows:

sudo add-apt-repository ppa:stackapplet-dev/stackapplet
sudo apt-get update
sudo apt-get install stackapplet

The first time the application is used, run

python /usr/share/stackapplet/stackapplet.py &

from a terminal.


ClassicMenu Indicator

Category: Application starter

Provides a simple way to get a classic GNOME-style application menu for those who prefer this over the Unity dash menu. Like the classic GNOME menu, it includes Wine games and applications if you have those installed.

To install Classic Menu indicator in Ubuntu Trusty Tahr:

sudo add-apt-repository ppa:diesch/testing
sudo apt-get update
sudo apt-get install classicmenu-indicator

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Get the most recent version from its web page (PPA available for Ubuntu 11.04, 11.10 and 12.04).