Google Chrome is probably the most well-known web app.
Even the Edge online window that Microsoft is so proud about is based on Chromium.
The speed is good and the security is top notch.

It also supports profile creation to fit different purposes.
Features and Highlights
Extensions
There are various types of extensions in Chrome Web Store.
Lots of extensions are well maintained so they always work with the latest version of the surfing app.

New extensions also keep appearing that gives you more choices to choose from.
Speed
As long as your system has a sufficient amount of RAM, Google Chrome is speedy.
Its RAM consumption is indeed pretty high, but so is the other browsers in the market.
Some users said that it hogs RAM more than the others, but some other users said otherwise.
The best way to find out is to give it a try yourself.
Secure
A good web app is not defined merely by speed.
It must be secure.
For a start, Safe Browsing protects you from harmful sites when enabled.
It does the same to every file that youre about to download.
Also, to protect users from stronger attacks, Google Chrome provides Site Isolation feature.
Of course there are more features to expect in the next releases.
Note that Google Chrome also have some controversial features such as Manifest v3 and FLoC.