When comparing Otter Browser vs Firefox Nightly, the Slant community recommends Otter Browser for most people. In the question“What are the best desktop web browsers?” Otter Browser is ranked 7th while Firefox Nightly is ranked 22nd. The most important reason people chose Otter Browser is:
A better license for a browser than a restrictive "all rights reserved".
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Under GNU GPL
A better license for a browser than a restrictive "all rights reserved".
Pro Open source
Anyone can contribute to the Otter Browser, solve common issues, bugs.
Pro Legacy Opera
Aims to recreate the best aspects of Opera 12.x.
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 External Rendering Engine
It uses the Qt Web Engine from your local Qt installation which is usually not often updated.
Con No support for addons
Con Under GNU GPL
It is licensed under GPL which is less permissive than other opensource licenses like BSD or MIT.
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.