Windows 2000 is a platform developed by Microsoft Corporation. Among other things, on this platform are running browsers and email clients. See below the software that is supported by Windows 2000.

By the way, maybe you are looking for Windows 2000 user agents?

Browsers:

• 360 Secure Browser
• Avant
• Chrome
• Crazy Browser
• Firebird
• Firefox
• Flock
• Iceweasel
• IE
• K-Meleon
• KMLite
• Lunascape
• Maxthon
• Mozilla
• Navigator
• Netscape
• Nichrome
• Opera
• PaleMoon
• Phoenix
• QQBrowser
• Safari
• SeaMonkey
• Sleipnir
• SlimBrowser

Email Clients:

• Thunderbird