Vivaldi
The Vivaldi browser protects you from trackers, blocks unwanted ads, and puts you in control with unique built-in features.
What is Vivaldi?
Vivaldi is extremely customizable, presenting a wide range of settings and built-in features designed to put the user in control. Its Chromium-based engine makes it fast and compatible with most Chrome extensions, and Vivaldi removes the code that tracks users from it.
It includes fully customizable web browser behaviors, mouse gestures and keyboard shortcuts, Quick Commands, the usual unlimited Speed Dial page, notes that can also be synchronized with the browser data, a webpage screenshot tool, a panel for displaying and managing bookmarks, history, etc, where users can also add their own web panels; the ability to edit the browser theme and toolbars by moving or removing buttons from the interface, moving the tab bar to the side or and/or the address bar to bottom of the window; powerful tab management with tab stacking, tiling and the windows panel, etc...
Vivaldi offers a built-in ad-blocker and partners with 
DuckDuckGo for the tracker blocker.
There is also a support for blocking cookie banners https://vivaldi.com/blog/vivaldi-crumbles-cookie-dialogs-raises-privacy/ with the help of a popular extension named I don't care about cookies and Easylist Cookie List.
A Vivaldi account gives access to the browser data sync, the 
Vivaldi Community (blogging platform), support forums and 
Vivaldi Webmail.
It's considered the spiritual successor of the original 
Opera browser before the complete rewrite that scrapped many of its features and options and the move of the ownership of Opera Software to a consortium of Chinese investors. Vivaldi Technologies was founded by the co-founder and former CEO of Opera, Jon Stephenson von Tetzchner, and Tatsuki Tomita.
Vivaldi Features
- Cloud Sync
- Privacy focused
- Block Trackers
- Support for Themes
- Extensible by Plugins/Extensions
- Text to Speech
- Portable
- Picture in Picture
- Dark Mode
- Support for Gestures
- Customizable
- Tab Stacking
- Support for Chrome extensions
- Side panel
- Speed dial
- Built-in Ad-blocker
- Opera-like
- Group tabs
- Quick Command Panel
- Sidebar
- QR Code Generator
- User friendly
- Highly costomizable
- Note Manager
- Visual system design
- Split tabs
- Feed Reader
- Pop out video
- Custom themes
- Android Sync
- Multiple search engines
- Built-in themes
- Web panels
- Integrated Email Client
- Custom search
- Nickname for bookmarks
- Page actions
- Split-screen view
- Support for Keyboard Shortcuts
- Based on Blink engine
- Synchronization
- Recent activities
- Spatial navigation
- Sync notes
- Built in tracking protection
- Capture web pages
- Set Tabs aside
- Chromium-based Browsers
- Configurable
- Resume interrupted downloads
- Tabbed interface
- Tab preview
- Tabbed browsing
- Tab Control
- Website screenshots
- Tabs
- Built-in Note Taker
- Reading mode
Vivaldi information
Supported Languages
- English
Comments and Reviews
Tags
- Web Browser
- RSS Reader
- Google Chrome Extension
- Note-taking
- Security & Privacy
- website-screenshot
- hibernate
- web-notes
- full-webpage-screenshots
- History viewer
- User interface
- floating-player
- notes-manager
I have all of the "popular" browsers on my laptop. Nothing compares to Vivaldi. Nothing. It's the browser that Opera always wanted to be, and other browsers just can't touch it. Highly recommended.
With the recent upgrade to 2.0 (including the bookmarks synching feature that I liked in Firefox), Vivaldi just got better.
But what made me install it as the main browser on many PCs, instead of Firefox, is that it's much less CPU and RAM-hungry.
Add to that the general impression that lots have been done to please geeky surfers (cool options, cool option panel, compatibility with Chrome plugins, highly customisable interface and shortcuts, automatic dark theme at night...), in such an extent that it became my main browser on my main machine too.
I love Vivaldi browser features, but because they are laggy and have a lot of bugs, I forced to write the review. Run Vivaldi browser with next flags: > -–flag-switches-begin --debug-packed-apps --silent-debugger-extension-api --flag-switches-end
And then right click on any element in the browser, and open it in Developer Tools (inspect element). And you will see the full picture of why Vivaldi is laggy.
What is Vivaldi?
In other words:
So, Vivaldi will NEVER be good and fast browser ever, because it does recursive work on itself, and then on the website what needs to load.
How work Google Chrome / Cent Browser / Opera / Firefox?
What Vivaldi do?
This is absolutely GARBAGE and a big problem.
Why Vivaldi team did that trick?
Because they are website devs, not a professional software dev. It's super easy to write a site interface, and join (include) another site inside already created UI and render it by browser engine. That why whole browser performance NEVER and NEVER will be as fast as any static UI browsers (chromium forks with a native static interface, firefox, Edge, etc).
Well, I only understood half of your review, and by reading it you seem much more development-savvy than my, but one thing I can reply for sure is that on my many PCs where Vivaldi is installed, it is neither laggy nor buggy (and faster than Firefox that I had been using for years before).
Reply written ago
@mll, tl;dr: vivaldi it's a browser inside browser who run a site inside website. Absurd, is not it? But this is true. Vivaldi do (x * y)^2 amount of work if compare to chromimum or edge. Always. (or around that).
Why? Because whole user interface (tabs, address bar, any visual part that you see) it's just SITE interface. Like good interface, like facebook interface, and bla bla bla. Got idea?
That's why Vivaldi can be so customized.
But whats problem with such method of making a browser?
The problem in next:
After that vivaldi just INJECT inside this rendered by chromium engine another site that a visitor trying to open. And browser again do:
Instead of:
Flags above it's a proof that whole interface of vivaldi browser = it's just an WEB elements, web forms, javascripts, css.
Example: It's like a building a build, for building a building inside this builded building. Like russian eggs. You do useless job in several times more than any other browser do.
But pros: you always can customize interface. Cons: you always slower than any other browser (Chromium based with the same version).
Reply written ago
I liked Vivaldi for its split screen, but it was pushy about updates.
For my usecase its the best browser around. Fast and reliable, privacy is very good.
One of best browsers you can use! It's nice and useful.
Vivaldi is one of the best browser, but still feels like work in progress. Early stage. Although it has much more security and privacy than most browsers it still need adons (or lots of work) in order to selectively use cookies, tracking, scripts, etc. Mail works, but lots of unneeded "features" (ie filters). Greatest downside, it uses insane amount of CPU and RAM. 5 tabs (one stream) uses 20 processes, more than 1,5GB RAM and 6 times more CPU than Frostpunk (2018. game) on high settings.