3. DATE OF RELEASE: is a web browser developed by Microsoft for the Microsoft Windows operating system since 1995. Has been the most widely used web browser Internet since 1999 until today. Versions: 1.0, 1.5, 2.0, 3.0, 4.0, 4, 5.0, 6.0, 6.0 sp1, 6.0 sp2, 7, 8,9. Speed: medium Security: