Sauce Labs - Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.
Gravatar - Gravatar (an abbreviation for globally recognized avatar) is a service for providing...
LambdaTest - Perform Web Testing on 2000+ Browsers & OS
42matters Explorer - Explorer by 42matters is a research tool to visually explore databases of apps, publishers, audiences, SDKs, technologies, contacts and others.
Browserless - Headless browser automation built for developers.
GeoPeeker - GeoPeeker is a tool for viewing sites from different geographic solutions.