When comparing Pale Moon vs Ghost Browser, the Slant community recommends Pale Moon for most people. In the question“What are the best web browsers for Windows?” Pale Moon is ranked 12th while Ghost Browser is ranked 42nd. The most important reason people chose Pale Moon is:
"Classic" Firefox add-ons can work, but they are not supported and should be updated or forked to become a Pale Moon add-on.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Has its own add-on ecosystem, built on time-tested technologies such as XUL (plus JS and CSS) and XPCOM
"Classic" Firefox add-ons can work, but they are not supported and should be updated or forked to become a Pale Moon add-on.
Pro Designed for usability, not the shiny new things
Pro Light on resources, although it's not its main focus
Pro Independent from Google and Mozilla
Pale Moon is an independent fork of an older version of Firefox. Therefore, it is independent from Mozilla and are not affected by their terrible decisions such as removing XUL, adding telemetry, pocket, etc.
Pro Customizable
Pro Stable
Pro Support for existing web standards
Pro Respects your privacy
Contains much less spyware than Chrome and Firefox and all of it can easily be disabled.
Pro Open source
So we can verify that the browser is not spyware.
Pro Supports complete themes
Pale Moon supports complete themes, something which Firefox used to have before version 57.
Pro Support for GTK themes
Pale Moon supports your GTK theme while Firefox does not.
Pro Uses Goanna layout engine
Unlike most other browsers, Pale Moon uses its custom engine.
Pro Has its own library of legacy extensions
Pro Very Independent
It isn't controlled by Google nor Mozilla, has its own engine.
Pro Good community support
Pro Optimized for modern processors
Pro Legacy Firefox
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 Unsecure
Pale Moon lacks the sandboxing and other privacy protecting features included in latest Firefox releases.
Con Still contains some spyware
Default homepage is spyware and search suggestions and automatic updates are enabled by default.
Con Outdated rendering engine
It is an really old fork of Gecko that misses many of the newer web features.
Con Pale Moon is based on very outdated Firefox code
Con Uses Goanna
It an old Gecko-fork that is developed mainly by one man.
Con Lacks popular extensions and adblockers
It doesn't have ublock origin and umatrix.
Con Does not contain multi-process sandboxing
Con Android version has odd behavior
Clicking does not work.
Con Pale Moon's website is cloudflared
Con WebAssembly enabled by default
Con Lead developer loves Cloudflare and hates Tor
Website is cloudflared and he thinks most sites should be hostile towards tor.
Con Incompetent developers
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.