Collection of handy online tools for developers, with great UX. 

This is the kind of information that all the sites you visit, as well as their advertisers and any embedded widget, can see and collect about you. 

Internet speed test (speedtest). Test your ADSL, xDSL, cable, optical fiber or satellite broadband connection bandwidth.

The free app that makes your Internet safer. Now available for even more devices.

Google Public DNS.

Quad9 is a free service that replaces your default ISP or enterprise Domain Name Server (DNS) configuration. 

WIndows Virtual Video Drivers