QtWeb is a secure, compact and portable web browser with some unique user interface and privacy features. QtWeb is free, non-commercial and open source project based on Nokia's Qt framework and Apple's WebKit rendering engine (the same as being used in Apple Safari and Google Chrome). Single EXE - very compact (4MB). Has minimal dependencies - can be run from bootable CD/DVD (BartPE,Boot Disk). Strong Privacy. Change Application Style on-the-fly.

Mozilla Firefox is a cross-platform browser, providing support for various versions of Microsoft Windows, Mac OS X, and Linux. Read more about it.

Firefox is compatible with all versions of windows. Even with Windows Vista. Download it and try it out. You'll wish you heard about Mozilla Firefox earlier.