Browser-based mining, as its name suggests, is a method of cryptocurrency mining that happens inside a browser and is implemented using scripting language, known as widget or code snippet. Its as an alternative way for website owners to get profitability and raise revenue.
Yesterday i submit a project proposal and the result of my proposal was rejected by a reply from Gabriel Osiceanu <
gabe@gath3r.io>
Thanks for applying to our Early Adopters Program.
Unfortunately, the program is full for now.
Thank you for your interest in Gath3r, and we will contact you with any update regarding the opening of more spots, or when the regular sign-ups will begin.
Thanks and regards,
Fortunately Gath3r Bounty Campaign is still available!

I think, Gath3r must wraps everything up nicely in an easy-to-use package for website owners. Because many the case for browser-based mining wasnt looking good (PC becomes slow response,and others), finally the project didn't last long.
Hope the Gath3r did last long

Yes, the Early Adopters Program is now full, that is why we cannot accept new applicants at the moment. We will open the regular sign-ups soon though, so stay connected to our social channels to find out immediately as it happens. Thanks for your interest!