NetWorker 4.6.0 MacOSX | 6.84 MB
NetWorker shows network information conveniently in the menu bar. It also features a window that shows additional information about the currently active network adapter.

NetWorker features:
* Fully customizable view - you can choose which information is shown and select many different, pre-defined widgets.
* The currently active network adapter is detected automatically.
* Optional overlay window that always stays on top - useful for fullscreen apps or games.
* Adjustable refresh interval.
* Check your external IP address.
* Choose between a byte- or bit-mode.
* Support for auto start.
* Traffic Overview: Use this feature if you are on a volume limited plan.

Compatibility: OS X 10.10 or later, 64-bit processor

Mac App Store:

http://itunes.apple.com/app/networker-show-network-speed/id1163602886