When comparing Seamonkey vs Qutebrowser, the Slant community recommends Qutebrowser for most people. In the question“What are the best web browsers for Linux?” Qutebrowser is ranked 5th while Seamonkey is ranked 16th.
Ranked in these QuestionsQuestion Ranking
Pro Not just an e-mail client
Seamonkey is more than just an e-mail client as it is a full featured web browser as well. This makes for a good app to use for those that dislike having many different apps on their devices as it is a bit like an all in one solution.
Pro Auto imports setting from Thunderbird
For those that would be making the switch from the Thunderbird e-mail client setup is quite easy with Seamonkey as it auto imports all previous Thunderbird settings.
Pro Fast and light on resource usage
Pro Vim-style keyboard shortcuts and commands for rapid navigation
With suggestions/auto-complete to reduce the learning curve.
Con Permanent CPU usage
Seamonkey permanently uses CPU (quite a few percents on a Intel i7). On a laptop this causes the fan to run (which make noise) and the battery to lasts less time.
As it is mainly written in Python it's startup is slower than the competition.
Con Software rendering only with Nouveau Drivers
Con Steep learning curve
If you're not a vim user it will take some time to get used to the shortcuts.