PeakHour

Real-time network performance monitoring, right from your Mac OS X menu bar.
Available in the Mac App Store
Beautiful, real-time network bandwidth visualiser for
Mac OS X
Monitor the throughput of your Internet, WiFi, NAS, servers and more.
Works with most SNMP and UPnP-enabled network devices*
 

Easy to set up

Configuration Assistant guides you through set up to help you get the right configuration.

Real-time

Monitor your Internet, WiFi and network device's throughput, in real-time.

Works with

The only bandwidth monitoring tool to support both UPnP and SNMP making it much more likely to work with your routers and devices.

Watch your quota

On capped Internet plans, keep an eye on your usage so you don't go over. Updates in real-time; automatically reset on your anniversary date.

Multi-device

Now you can monitor as many devices as you like, each one with its own specific look.

From the source

Measure performance where it counts - from the device itself.

Keep your ISP honest

Monitor your own usage. Know your ISP is delivering the speeds you're paying for.

Tweakability

Customise to suit your tastes. Tweak colors, refresh intervals, apply smoothing etc.

Will my Router, WiFi Access Point, NAS etc. work?

PeakHour supports both SNMP and UPnP as a way of interogating your devices for information. SNMP is the most robust (and purpose built) but there are many routers that do not support it, or don't support the necessary attributes. UPnP is much more widely supported but does not provide quite as much granularity as SNMP.

The PeakHour Compatibility Check is the quickest and easier way to find out if your device is supported or not.
Use the free Compatibility Check tool to test your device(s).
Free in the Mac App Store