Regular Expression Library

Test Your Regular Expressions

New Silverlight Tester

Singleline

Case Insensitive

Multiline

Ignore Whitespace in Expression

Explicit Capture

URL

File

Source

Regular Expression
((?:Microsoft)?.?(?:(?:Windows.NT.(?:[1-4].[0-9]))|(?:Win(?:dows)?.?NT).?[1-4](?:.?[0-9])?|NT[1-4]))