Raging Menace
  MenuMeters
MenuMeters cannot be used on 10.11 El Capitan, please see "System Requirements" below.
Introduction

MenuMeters is a set of CPU, memory, disk, and network monitoring tools for Mac OS X. Although there are numerous other programs which do the same thing, none had quite the feature set I was looking for. Most were windows that sat in a corner or on the desktop, which are inevitably obscured by document windows on a laptop's small screen. Those monitors which used the menubar mostly used the NSStatusItem API, which has the annoying tendency to totally reorder my menubar on every login.

The MenuMeters monitors are true SystemUIServer plugins (also known as Menu Extras). This means they can be reordered using command-drag and remember their positions in the menubar across logins and restarts.

MenuMeters comes without warranty or support. That said, if it causes you problems I'd like to hear about it so that I may be able to track down the bug. Even better, since this is open source, you can fix the bug yourself. Patches are accepted.

Screenshots
 

License

MenuMeters is released under the GNU General Public License (GPL). This makes it both "free" as in beer and "free" as in speech, for those who partition the world using that terminology (I am not one of them). MenuMeters is open source mostly because there isn't a good reason for it not to be, except, perhaps, saving myself the embarrassment of having others look at my first C code from a long time ago.

See the "GNU General Public License.rtf" file for full license terms.

System Requirements

Due to new Apple-enforced code signature restrictions, MenuMeters is not compatible with the OS X 10.11 "El Capitan" public beta. Although the restriction is similar, this is not directly related to 10.11's "System Integrity Protection" (SIP, aka "rootless") feature and disabling SIP has no effect on MenuMeters.

Unless Apple makes the signature restriction optional, it is not clear that MenuMeters in its present form can ever be made compatible with OS X 10.11.

In the meantime I can only suggest that you do not install 10.11 if you wish to use MenuMeters.

Download

NOTE: IF YOU ARE INSTALLING OVER AN OLDER VERSION OF MENUMETERS YOU MUST LOGOUT AND LOGIN AFTER INSTALLATION IN ORDER TO LOAD THE NEW VERSION.


MenuMeters 1.8.1 compressed disk image (dmg)
MenuMeters 1.8.1 source code (tar.gz)