Meazure - What are the dimensions of that image? How big is this window?
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
Bluegrams Screen Ruler - A lightweight and configurable ruler tool for Windows Desktop.
Dialpad - Switch is a cloud-based phone system built for Google Apps users.
ScreenRuler - ScreenRuler lets you measure objects on your Ubuntu desktop using six different metrics.
Aircall - Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs