Meazure - What are the dimensions of that image? How big is this window?
Taptalk - Personal video and photo messaging
Bluegrams Screen Ruler - A lightweight and configurable ruler tool for Windows Desktop.
elasticsearch-gui - AngularJS Client for ElasticSearch as a plugin.
On-Screen Ruler - lightweight, free, semi-transparent ruler
ElasticHQ - Tool for ElasticSearch management and monitoring.