Kaizen - Kaizen is an ElasticSearch GUI for Windows, Mac and Linux, written in JavaFX as a cross-platform desktop application.
On-Screen Ruler - lightweight, free, semi-transparent ruler
ElasticHQ - Tool for ElasticSearch management and monitoring.
Bluegrams Screen Ruler - A lightweight and configurable ruler tool for Windows Desktop.
elasticsearch-head - A web front end for an elastic search cluster
Pixus - Pixus is an AIR pixel ruler application, a handy tool for web and interface designers.