RegexLab .NET
a powerful regex editor for .NET-based regular expressions
RegexLab .NET is a full-featured application for editing regular expressions (or regex). The application features a modern, highly functional UI allowing increased productivity when writing or debugging regular expression patterns. RegexLab .NET is a .NET 4 Windows Forms application. Source code is available on demand.

Features include:
- All regex operations such as matches, replacements and splits
- Multi-pane views allowing to edit the pattern, visualize matches and analyze the results within the same window
- Syntax highlighed editor with unlimited undo-redo buffer
- Highlighting of matches as text is typed
- Regex Workbench pattern analysis
- Saving and reloading expressions
- Generating code in C#, VB.NET and Javascript
- Built-in RegexLib.com search engine
- Built-in MSDN documentation browser
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