BrowserStack
Test your website for cross browser compatibility on real browsers. Instant access to multiple desktop and mobile browsers. Get Free Trial.
17 Alternatives To BrowserStack

Blisk
Download Blisk - a browser for web developers. Blisk is a toolbox for development, debugging and testing: emulation, sync, analytics, and screenshots.
Browserless
Headless browser automation built for developers.

CrossBrowserTesting
Browser Testing made simple! Run automated, visual, and manual tests on 1500+ real browsers and mobile devices. Test more browsers, in less time.
Endtest
Codeless Automated Testing, Powered By Machine Learning.

Ghost Inspector
Ghost Inspector is a browser testing tool that lets users test browsers on their own website or application. This software allows for tests to be automated, and data from completed tests is saved in the Cloud for future analysis.
Ghostlab
Ghostlab allows you to test out a newly developed website on a variety of browsers and mobile devices at the same time. To get started, simply drag the web address to the Ghostlab system and press the play button.
IETester
ietester is an application that allows to test on multiple ie versions at the same time in the same application

LT Browser
LT Browser is an award winning Next-gen browser to build, test & debug mobile websites. With LT Browser, you can see mobile view of website on different screen sizes and resolution.

PractiTest
PractiTest is a cloud based Innovative test management tool.
Ranorex Studio
Accelerate testing with Ranorex Studio, the all-in-one tool for test automation. For desktop, web, or mobile app testing, with easy codeless automation tools, a full IDE, robust object recognition, flexible reporting and built-in Selenium WebDriver.

Sauce Labs
Test mobile or web apps instantly across 700+ browser/OS/device platform combinations - without infrastructure setup.
Selenium
Selenium automates browsers. That’s it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.
TestComplete
TestComplete Desktop, Web, and Mobile helps you create repeatable and accurate automated tests across multiple devices, platforms, and environments easily and quickly.
TestingBot
Automated and Manual Browser and Device testing.
TestingWhiz
TestingWhiz is a codeless test automation tool for software, mobile and web.

browserling
Live interactive cross-browser testing from your browser.

pCloudy
pCloudy is the most powerful cloud based App Testing Platform.