Last Update: 2007-09-11
MacFace is a little freeware application by Ryu (J) that acts as an activity monitor, informing you of how hard your processor is working and current RAM state. It's different from Activity Monitor and the many similar applications in that it does this by displaying a cute (and generally anime-style, though that's not technically a requirement) little face in your Dock.
It is a MacOS X application only; there is (somewhat ironically) a Windows port under development, and a Vista Gadget clone, VistaFace, but I know nothing about either and there isn't currently an English translation of them to my knowledge.
MacFace may not be the best CPU monitor out there, but it's definitely the cutest.
This isn't the official MacFace web page--that is at Ryu's site. We volunteered to translate the app and its documentation into English because Akemi immediately fell in love with it and wanted to help make it available to those who don't speak Japanese.
Download MacFace 1.3.1 (277K .dmg; this is the first version with an English translation)
Since the official MacFace page is in Japanese, we've gotten permission to link directly to the download.
The download includes the application, extensive help files, more detailed information about what MacFace does and how it does it, and documentation on the .mcface file format so you can make your own face files. As of version 1.3.1, it includes an English translation of all of the above.
Its main purpose is to display a face in your Dock that changes its expression based on the RAM and CPU use of your computer. Exactly how it does this will depend on the face you're using--it comes with two, you can download more, and detailed instructions on how to make your own are included with MacFace.

Generally speaking, the more active the face looks, the harder your CPU is working. If the face looks stressed, it indicates that there's not much RAM available. And there's an indicator that shows if paging in or out is occurring, as well.
It also has a couple of additional features. It can display a window with a live, color-coded graph of the last minute or so of CPU and RAM use (white lines indicate pageins, black ones pageouts).

And, it also can display a window showing the historical trend of free space on your primary hard drive. It's not just a bar graph, though--it will add a trendline estimating the rate at which free space is decreasing (or increasing, rare as that might be), with an estimate of how long you've got until your drive is full.

MacFace is fully Universal and works equally well on PPC and Intel systems. It only takes about 500K on disk, and when there aren't graphs being displayed it uses essentially no CPU (under 0.1% on a 2GHz Core Duo), and well under 1% even with both graphs onscreen. What's not to love?
The installation process is easy.
If you want MacFace to open automatically every time you log in to your account, do this:

In addition to the default face, MacFace comes with Kikiki-rin (it's in the disk image along with the application--don't forget to copy it too if you want to use it!), but of course you want more. Here's a short list of some Face Files available on the web to get you started. They're all currently in Japanese, since the English version is brand new, but the downloads are pretty obvious even if you don't read Japanese and of course the faces themselves are in the universal language of anime.
If you create a face file, please let us know so we can link it (or host it for you if you don't have anywhere to put it!), and if you know of any face files not on this list, please drop us a note.
If any of the instructions here are unclear, please let us know so we can revise them. Otherwise, enjoy!