When comparing Polarity Browser vs Ghost Browser, the Slant community recommends Polarity Browser for most people. In the question“What are the best web browsers for Windows?” Polarity Browser is ranked 26th while Ghost Browser is ranked 41st. The most important reason people chose Polarity Browser is:
According to [their own tests](http://polarity.x10.mx/compare) Polarity takes up more than 10x less memory than IE, FF or Chrome.
Specs
Ranked in these QuestionsQuestion Ranking
Pros

Pro Fast and lightweight
According to their own tests Polarity takes up more than 10x less memory than IE, FF or Chrome.
Pro Multi-session browsing with Parallel Sessions
Parallel Sessions allows users to browse the web with different profiles with separate cache, cookies, and history. This enables users to login to multiple accounts to different websites like Facebook.
Pro Built-in privacy features
Polarity browser comes with ad block and Do Not Track built in.

Pro Customizable UI
It allows you to customize many things from window color, tab color and text color to window transparency and border size. You can set Background image or use Shuffle from Bing. You can also save the theme, import and export it.
Pro Custom Developer tools
Polarity comes with the standard Inspector for Blink based browsers along with its custom client that works with both Trident and Blink.

Pro Great HTML5 support
Polarity scores 512/555 on the HTML5 test. It is just a couple of points shy of Google Chrome.
Pro Log into any website with multiple accounts in one window
Pro Projects function removes the need to log in
With the new release (as of Dec 6th 2016), you can save a group of "Sessions" with logins stored to a Project, which you can launch with the click of a button. "Projects" eliminates the need to spend time setting up your workflow every day, so you can get right to work.
Pro Save a set of isolated cookie jars into a project
Pro Color coding for session organization
Different sessions are distinguishable by color for easier organization. You can also rename sessions to fit your needs.
Pro Group your cookie jars
Pro Developer tools for each session
The developer tools work just like Chrome, except that you can separate dev tools by session.
Pro Assign a different proxy to each tab for international sites
Cons

Con Few annoyances left unchecked
The browser has a couple of bugs such as where extensions are not actually ran after installation despite a notification stating that they are.

Con Windows and Android only
No Linux, OSX or iOS version available.
Con Unstable and frequent crashes
Though the browser is really lightweight and lightning fast, it crashes many times and is clearly unstable.
Con Uninstallation problems
Polarity browser can only be uninstalled with a built-in deinstallation tool. This is very impractical.
Con No essential tools for web development
Con Doesn't support linux
Supports only windows and mac
Con Closed source
Proprietary software makes it harder to port, study, and do further edge-case testing without breaking terms and possibly getting sued. It even makes it harder to test on multiple OS platforms, some with varying ability for rendering.
