When comparing SeaMonkey vs Firefox Nightly, the Slant community recommends Firefox Nightly for most people. In the question“What are the best desktop web browsers?” Firefox Nightly is ranked 22nd while SeaMonkey is ranked 27th. The most important reason people chose Firefox Nightly is:
Nightly comes after beta which means you get access to more features.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Full internet suite
Wraps all your internet stuff together. It's like it's Firefox and Thunderbird all wrapped into one, and it kinda is. It's the continuation of the project both of those were extracted from.
Pro Not bloatware
Pro Designed for usability, not looks
Pro Access to new features
Nightly comes after beta which means you get access to more features.
Pro Blazing fast
Short load times. Quick tab switching. Fast rendering.
Pro Private and secure
Made with privacy and security in mind, even Tor based their browser on it.
Cons
Con Bloated with unnecessary features
Seamonkey has a browser, email client, and even an IRC chat. Too much bloat! It doesn't do one thing, let alone do anything well. It should be avoided.
Con Looks very old and outdated
Con No Addons
not a single adblocker or privacy addon that was useful
Con Buggy; performance issues and crashes
Because you're accessing new Firefox features, bugs and crashing comes. Firefox Nightly is meant for developers and it's for PCs that have low chance of getting attacked. If Firefox is for you, go for the normal one or beta at least. If you use Nightly, checking updates regularly is recommended.
Con The icon is ugly
Con Not intended for general use
This browser was made for testing purposes for future versions of Firefox, and it can easily crash. Most people should use the stable release of Firefox.