Both Vivaldi and Brave are browsers based on Chromium, a browser created open source by the Chromium Project. Currently I use Vivaldi, along with two other browsers, and I am satisfied with its performance when doing what I need to do with it.
Both browsers have Windows, macOS and Linux compatible versions.
I understand that Brave is open source, while Vivaldi is that only in part, because its Graphic User Interface is proprietary and some people don’t like Vivaldi because of that, although it does not bother me. The developers of Vivaldi claim that having more control on the GUI features makes it possible for them to continue improving on the ease of the users to customize it to better suit their particular needs and tastes. Be that as it may, I don’t know why this should be a concern: in half a century of working with computers I have used 13 different OS (not counting in this total also the different versions of each; if I did that, the number would be several times bigger) and with the exception of Linux, they all have been fully, not partially, proprietary.
Both browsers, from what I’ve been reading, are about the same when it comes to protecting the user’s privacy and security online.
Some other information here:
https://www.chromium.org/chromium-projects/
https://en.wikipedia.org/wiki/Brave_(web_browser)
https://en.wikipedia.org/wiki/Vivaldi_(web_browser)
I would be interested to hear what others might know and also what they think on how these two browsers compare with each other. Thanks in advance for any informed opinions.
Ex-Windows user (Win. 98, XP, 7); since mid-2017 using also macOS. Presently on Monterey 12.15 & sometimes running also Linux (Mint).
MacBook Pro circa mid-2015, 15" display, with 16GB 1600 GHz DDR3 RAM, 1 TB SSD, a Haswell architecture Intel CPU with 4 Cores and 8 Threads model i7-4870HQ @ 2.50GHz.
Intel Iris Pro GPU with Built-in Bus, VRAM 1.5 GB, Display 2880 x 1800 Retina, 24-Bit color.
macOS Monterey; browsers: Waterfox "Current", Vivaldi and (now and then) Chrome; security apps. Intego AV