The applets are highly configurable, allowing you to select the orientation, change the graph size, update interval, and it also ships with quite a few color schemes.

With the latest 1.4.0 release, Multiload-ng includes a Unity (and others) AppIndicator, as well as a systray applet. 

I recently stumbled on an issue with Dropbox and the Ubuntu flavors that support AppIndicators (except Unity), like Xubuntu and Lubuntu: the Dropbox AppIndicator icon shows up as broken and the menu doesn't work. This isn't a new issue though, and it seems to occur starting with Ubuntu 14.04.

The issue occurs with the Dropbox packages in the official Ubuntu repositories (called "nautilus-dropbox", which doesn't depend on Nautilus and can be used to install Dropbox on any desktop environment) as well as the Dropbox package downloaded from its official website. 

`Indicator Systemtray Unity` doesn't show up on the panel until you launch an application which comes with a tray icon. Even then, the systray is displayed on demand (on left/middle-click) and there are two modes available:

As you probably know, the Unity notification area (systray) whitelist is no longer available in Ubuntu 13.04+ (so that includes Ubuntu 14.04 and 14.10) so you can't whitelist applications to be able to use the systray. If you can't live without an application that still uses the old notification area, here's how to get the Unity systray whitelist back in Ubuntu (Unity).

The official Linux Mint GNOME Shell (more about Linux Mint 12 here) extensions can be downloaded via GitHub. However, since some of them are forks of the official GNOME Shell extensions, it's not a good idea to install and activate all of them because of possible conflicts with the original extensions.

If you want to manually install some of the MGSE extensions, get the Git branch, open the "test" script and remove any extensions you don't want to install. And finally, run the "test" script (./test).

For Arch Linux, you can find all the MGSE extensions in AUR: http://aur.archlinux.org/packages.php?ID=53742

To make it easier for Ubuntu users to give some of the new MGSE (Mint GNOME Shell Extensions) a try, I've uploaded 3 extensions to the WebUpd8 GNOME 3 PPA (all credits for the extensions: Linux Mint and their official authors, all I did was to upload them to the PPA).

Unity got its notification area (called Systray by the Ubuntu developers) back a while ago, but only for a few applications: Java apps, Mumble, Wine applications, Skype, and hp-systray. But there's an easy way to either re-enable the Systray for all applications or to whitelist a few applications you can't live without. Read on to learn how to get your systray back!