Speedtest by Ookla - Measure your ISP's performance in a click
Fast.com - Quickly test your internet speed with this fast-loading speed test powered by Netflix.
TripMode - Manage your Mac's broadband usage while on a hotspot
Speediness - Quickly check your internet connection speed.
Meteor - Meteor is a set of new technologies for building top-quality web apps in a fraction of the time.
Speedy - Speedy lets you perform fast, private and real-world accurate speedtests directly from your Menubar through Apple's servers.