| 1999 | The Victoria's Secret fashion show becomes the first major webcast on the Internet attracting over 1.5 million visitors on February 5, 1999. Unfortunately not everyone was able to view the webcast because of the popularity. |
| 1999 | The Intel Pentium III 500 MHz is released on February 26, 1999. |
| 1999 | Microsoft acquires Access software April 19, 1999. |
| 1999 | IEEE introduced 802.11b. |
| 1999 | Microsoft releases Windows CE 3.0 |
| 1999 | Microsoft releases Internet Explorer 5.0 in March 18, 1999. |
| 1999 | The Melissa begins infecting computers March 26, 1999 and quickly spreads around the globe over e-mail in hours and becomes one of the fastest spreading viruses in history. |
| 1999 | RSAC becomes part of ICRA |
| 1999 | The Intel Pentium III 550 MHz is released on May 17, 1999. |
| 1999 | National Semiconductor announced it will exit the PC processor market. June 30, 1999 - VIA Technologies announces it will acquire Cyrix from National Semiconductor. |
| 1999 | IBM introduces the first Microdrive, the world's physically smallest hard drive capable of storing 170MB. |
| 1999 | The Intel Pentium III 600 MHz is released on August 2, 1999. |
| 1999 | The Intel Pentium III 533B and 600B MHz is released on September 27, 1999. |
| 1999 | Aims Labs goes out of business. |
| 1999 | Amazon agrees to buy Accept.com, Alexa Internet (Alexa.com), and Exchange.com. |
| 1999 | AOL purchases Nullsoft Jun 1, 1999. |
| 1999 | NVIDIA introduces the GPU. |
| 1999 | The Melissa e-mail virus begins spreading over the Internet causing an estimated $80 million in damage. |
| 1999 | Iomega releases its Zip plus disk drive and diskettes. |
| 1999 | Sun Microsystems acquires StarDivision, the developers behind the StarOffice suite of software. |
| 1999 | The Intel Pentium III Coppermine series is first introduced on October 25, 1999. |
| 1999 | The D programming language starts development. |
| 1999 | On December 1, 1999 the most expensive Internet domain name business.com was sold by Marc Ostrofsky for $7.5 Million. |
