Pale Moon, Otter, gab.ai

Could you add Pale Moon and Otter to the list of browsers?
Here's some info about Pale Moon:
General Information: http://www.palemoon.org/info.shtml
FAQ: http://www.palemoon.org/faq.shtml
Rumor Control: https://forum.palemoon.org/viewtopic.php?f=4&t=21626&p=164710

One of the devs is sometimes kind of rude to people who regurgitate myths about the browser, which has given them a lot of bad PR lately, but I really don't think it's fair to judge the community as a whole based on his behavior as some do.

The Otter browser is a project by former Opera devs to create a browsing experience like that of Opera, powered by the WebKit engine, qt5, and eventually Chrome's add-on system. It's kind of buggy at the moment, but may at least be something to look out for in the relatively near future. The website is here: https://otter-browser.org/

Lastly, I'd like to mention Gab at https://gab.com/ which is more or less Twitter without the ridiculous amounts of censorship. While it is often called an "echo chamber for the far-right" so are Minds and BitChute, and the claims are just as false for Gab as for them.

No file is named in the issue. Locate the repository's browser and service lists, then compare their entry format and inclusion criteria with the linked Pale Moon, Otter, and Gab sources. Done means adding entries that fit the project's format and criteria.