On common UNIX-like computer operating systems there was extremely flexible/customizeable/lightweight tool for System Stats monitoring, called Conky. I'd like to find alternative system monitoring tool for operating system stats in OS X, preferable with the same set of features or more, e.g.:

  • OS stats monitoring (CPU usage, mem usage, network monitoring, disk usage, "top" like process stats, uname, uptime, etc);
  • support of compact representation in system tray (menu bar), or/end desktop-widget view;
  • lightweight;
  • highly customizable, support of user configuration (alike in conky-app: display information either as text, or using simple progress bars and graph widgets, with different fonts and colours);

What options for application/tools exist for OS X?

I searched for the other topics, and found, that answers/questions are not well organized, some of them are really specialized, lots of duplicates, etc. Let's be more specific.

Rules to structure the answer

  1. One app per answer.
  2. Use this format for the first two lines of your answer:

    ## [app name](link to website)

    ### [App Store](link to AppStore) (price)

  3. Check for duplicates before adding new answers.

  4. If you find a duplicate, vote it down and encourage its poster to up-vote the original entry instead (and remove the duplicate).
  5. Include short description (preferably not marketing text) about what this system monitor does:

    • which OS stats (uname, uptime, CPU usage, mem usage, disk usage, "top" like process stats, and network monitoring, just to name a few);
    • what are configuration options, how flexible they are;
    • can it be shown nicely/compact in system tray (menu bar);
    • can it display information either as text, or using simple progress bars and graph widgets, with different fonts and colours;
    • provide one-two screenshots, if possible (with permanent link)
    • unique features;
    • is it lightweight or monstrous;
    • etc.
  • @bmike, it's not really a duplicate, as you indicated, the ticket you are referencing is just the small part of current question. The question is much wider and not limited to the taskbar. I'd mark those question as related, but not duplicate. Or if you want to "merge" them, that it sounds to me the other ticket is a subset of current ticket, not vise-versa. Please, re-consider and review them one more time. Thank you. – Farside May 9 '16 at 9:58
  • I'm willing to reverse my vote if there is some consensus on Ask Different Meta or an edit to make is clearer how this is different than the other list of tools. We might need a side discussion on list of X questions as they have other issues that generally get them closed or down voted into oblivion. I've removed the wiki since we generally don't use that anymore. – bmike May 9 '16 at 11:17
  • 2
    @bmike, I changed the subject, so the sense is encapsulated within it, and it would be better for SEO. Voted for reopening. And thank you for the input regarding wiki, this concept is confusing for sure, I bet most of people don't understand it, and there are no clear criteria and flow for this type of question. – Farside May 9 '16 at 12:01


system tray


  • CPU, memory, disk, and network monitoring tools for Mac OS X;
  • are a true SystemUIServer plugins (also known as Menu Extras);
  • Net Meter can display network throughput as arrows, bytes per second, and/or as a graph.
  • minimalism: extremely lightweight and dumb simple;
  • size is ~1Mb;
  • open-source, freeware.

Official website states about exception:

MenuMeters cannot be used on 10.11 El Capitan

But I managed to run on OS X El Capitan (10.11.3) without any problems, I will provide the link on re-compiled version, as this tool is opensource. It works like a charm for a last year, not a single issue found even after automatic system updates.

Configuration screenshot: configuration options


iStat Menus

Official Website (single license: $18, "family pack" (5 licenses): $25, FREE trial: 14 days)

Features include (but not limited to):

  • CPU usage
  • Process usage breakdown
  • GPU usage (includes FPS)
  • Current uptime
  • Memory usage/pressure
    • app/wired/compressed memory
    • swap memory monitoring
  • Disk IO (external disks supported)
  • Network monitoring
    • Individual interface upload/download, total data transferred, peak speeds etc
  • Sensors (temperatures, ambient light, power draw current/volts)
  • Battery information (health, capacity)
  • World Clock
  • (my personal favorite) graphs of the item for the past hour, twenty-four hours and seven days

Size: 58.7 MB
Customization Options:

  • the entire layout of the menubar dropdown is completely customizable and displayed in a user-defined layout
  • the type of graph displayed can be customised (opposed, centered, stacked)
  • the skin of the app can be customised (dark, light, other colors as well)
  • menubar footprint is customisable as well


Main overview, CPU, memory, sensors

Menubar footprint

Main app window

Resource usage: iStat Menus is on the low-medium end of the resource consumption spectrum. The app uses about 100-150 MB of RAM at any one time, and has minimal impact on the CPU.

  • can the screenshots be reduced in size, or is it possible somehow to shrink the answer and to make it laconic and easy to read? or even to reduce/align the number of screenshots. thank you. – Farside Apr 4 '16 at 13:06
  • I'm trying to do that right now, actually. They're quite annoying having to scroll so much. Sorry about that – perhapsmaybeharry Apr 4 '16 at 13:07
  • Okay, so it seems I can't find a way. I'm going to take this matter to meta – perhapsmaybeharry Apr 4 '16 at 13:15
  • @perhapsmaybeharry see the answer to meta.apple.stackexchange.com/questions/2738/… – nohillside Apr 4 '16 at 13:33
  • 1
    How this app can use 50Mb, if the packed DMG is around the same size? Lots of controls, widgets, graphs, etc... When I tried this, I think it was closer to ~**300Mb** in the memory, constantly, I think it's way too much for being lightweight, for what is does. – Farside Apr 4 '16 at 13:54


Official site (free, open source)

The BitBar app lets you put the output from any script or program right in your Mac OS X menu bar. And it's completely free. An impressive number of plugins have already been contributed by a wide range of developers just like you, and this site makes it easy to find them.

The website does indeed list a large number of network and system plugins for monitoring CPU usage, uptime, battery status,etc., and of course you can write your own; they're just shell scripts.

Uptime plugin by Matteo Ferrando

  • OMG, this one is really feature rich beast, tons of different plugins, widgets, utilities! I definitely would try. – Farside Apr 4 '16 at 15:11


AppStore ($1.99)

  • Shows memory/CPU usage status, CPU temperature and fan speed, network status and disk reading/writing status on status bar.
  • provides a tool kit including mini music player,
  • screenshot capture,
  • memory cleaner.
  • size: 1.0 MB

Screenshot: enter image description here

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