Once Upon A Time It Would Have Been Internet Explorer. However, on windows, you will need windows 7 and above to install the browser. Qutebrowser, pale moon, and brave are probably your best bets out of the 21 options considered.

Midori (windows and macos | free) lightweight browsers ship with the basic tools you need to access web pages without draining pc resources or increasing cpu temperature.

Vivaldi is a lightweight yet free browser designed for the windows, mac, and linux platforms. Source: Midori (windows and macos | free) lightweight browsers ship with the basic tools you need to access web pages without draining pc resources or increasing cpu temperature. Quite good browser, a bit more lightweight than firefox 52esr. But ie 8 is/was the vast version what works with windows xp. Source: It uses google chrome as its default search engine but it is so efficient that it has beaten mozilla firefox in the html 5 has a very friendly and easy to use interface along with being fully customizable. Its custom build version offers an improved download system, integrated flash player and support for npapi, java and silverlight that were removed from chrome.

Pale moon browser xp x86 download