When comparing Lightning vs Puffin Secure Browser, the Slant community recommends Lightning for most people. In the question“What are the best Android web browsers?” Lightning is ranked 17th while Puffin Secure Browser is ranked 34th. The most important reason people chose Lightning is:
This means you can help developing new features if you would like to contribute. Moreover you can inspect the code if you are concerned about privacy.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Free and open source software
This means you can help developing new features if you would like to contribute.
Moreover you can inspect the code if you are concerned about privacy.

Pro Built-in reading mode
Reading mode allows removing everything on a page but the content. It removes ads, styling and anything else that could get in the way of a comfortable reading experience.

Pro Slide-out tab switcher
Tab switcher can be quickly accessed by swiping from the left.

Pro Incognito mode
Pro Fully encrypted
The data between the browser and the cloud sandbox is encrypted.
Pro Cloud-Computing
Websites are preloaded in the cloud.
Cons
Con No bookmark folders
Bookmarks can't be organized into folders.
Con Uses its own rendering engine
The most webpageds are designed with Webkit/Blink in mind so expect rendering issues.
Con Proprietary
It is proprietary software.
