When comparing Falkon vs Ghost Browser, the Slant community recommends Falkon for most people. In the question“What are the best web browsers for Windows?” Falkon is ranked 8th while Ghost Browser is ranked 42nd.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Developed by KDE
Pro Lightweight
Pro Free and Open Source
GPLv3 license.
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 Weak multimedia support
It has some issues with multimedia content eg. Non-playing videos on webpages.
Con Now under the KDE umbrella
Qupzilla is now discontinued and renamed to Falkon. It will also now be a part of KDE and will probably need more dependencies like kde-frameworks in the future.
Con Linux-only
Con Bookmark management not the strongest part
It often requires quite a lot of clicks to add and remove bookmarks.
Con Nobody uses it
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.