Pure green免install browser—Browzar

Browzar is an installation-free web browser. The Windows version is now only about 260KB in size. You can carry it around on a USB drive and use it anytime. Its biggest feature is that it requires no installation, does not record any browsing history or Cookies information after browsing web pages, and does not make any changes to the registry. It's a good product for protecting your online privacy.

My experience using it:

The UI design is simple and elegant, with easy-to-use basic essential functions of a browser, which is sufficient for usage.

Pop-up windows are blocked by default (you can disable this feature if you want). This is very practical.

It has good support for CSS and JS. (From my observation, it seems like the Windows version uses the IE engine.)

You cannot modify the default homepage (which points to Browzar's search engine, and its support for Chinese is not very good).

In summary, the differentiation provided by this browser can meet the needs of many people.