Sirius - An open-source clone of Siri from UMICH

On-Screen Ruler - lightweight, free, semi-transparent ruler

Applied Software - Prepare to work with an industry champion! Applied Software specializes in bridging the technology divide from product to productivity no matter your industry.

Bluegrams Screen Ruler - A lightweight and configurable ruler tool for Windows Desktop.

Ingram Micro - Delivering global technology and supply chain services to support cloud aggregation, data center management, logistics, technology distribution, mobility device life-cycle and training.

Pixus - Pixus is an AIR pixel ruler application, a handy tool for web and interface designers.