When comparing K-Meleon vs Polarity Browser, the Slant community recommends Polarity Browser for most people. In the question“What are the best desktop web browsers?” Polarity Browser is ranked 36th while K-Meleon is ranked 40th. 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 Secure and fully under user control
No malware/adware toolbars/extensions can be injected. You can switch off Java, JS, Flash, popups, and Ads from the toolbar or with a hotkey.
Pro Extremely customizable
Almost every detail can be personalized:
- skin
- buttons (icon theme and on/off state)
- toolbar placement
- menus
- number of settings and preferences
- proxies (add and switch with ease)
- locale (switch on the fly without downloads and restarts)
etc.
Pro Fast and lightweight
Light on memory footprint: the smallest RAM amount used among all the modern browsers. Fastest application startup. Very responsive. Invaluable on the older and low-end hardware.
Pro Highly extensible
Has hundreds of its native extensions written on its own macrolanguage.
Supports dozens of XPI-extensions for Firefox.
Pro Native

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.
Cons
Con Dead
Ended in 2016.
Con Stability issues
Con Windows only
K-meleon is only available on Windows. It was previously available on Android and Linux, but now the both discontinued.
Con Extremely dated interface
The UI is ugly, which is forgivable, but sticking to a setup from the early 00s makes using it clunky.
Con Uses Goanna
Its one of the oldest gecko forks which was made by one man.
Con Not secure

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.
