The tool allows you to easily enable/disable various Conky modules/widgets and it also supports full themes, which is a combination of widgets. You can configure each widget alignment, size, transparency and so on, all from a GUI so if you didn't know how to configure Conky before, give Conky Manager a try.

Conky Manager is a GUI that allows you to easily manage Conky configurations. The latest version - 1.1 -, lets you choose from 7 such configurations / themes.

GNOME Shell System Monitor is a highly configurable system monitor extension for GNOME Shell (do not confuse this with the official System Monitor extension!). It can display the CPU, RAM, Swap, Network or disk usage on the top GNOME Shell bar, either as a graph or digits (or both) and you can customize the colors, position and more.

Conky Lunatico Rings is a really nice Conky configuration based on Conky Orange which displays rings for the CPU, memory, disk and network usage, in the form of gauges.

(Using the original configuration, it looks like this on my system)

Indicator-Multiload (or System Load Indicator) is an Ubuntu Application Indicator that displays the network up/down speed as well as CPU, Memory and hard disk usage on the GNOME / Unity panel using a graph, just like the old System Monitor GNOME applet.

Since we last wrote about the GNOME Shell System Monitor extension, it got support for network upload / download rates and yesterday it also got a config dialog with lots of new features. Read on!