Programming & Scripting Languages

Microsoft .NET (4.*) Framework
C#
ASP(X)
(X)HTML, HTML5
CSS3, Less, Sass
javascript, AJAX, jquery, angularjs, json, bootstrap, modernizr
Razor
T-SQL

Databases

Microsoft Sqlserver

Solutions & Software Design Patterns

Web Application Project (WAP)/ Webforms
Model View Control (MVC)
Single Page Application (SPA)

Tooling

IDE: Visual Studio Community
GitHub
Codeplex
SourceForge
NuGet

Tortoise SVN (versioncontrol)
Mercurial SVN (versioncontrol)
DBMS: MS Sqlserver Management Studio

Platforms/ Operating Systems

Windows Client/ Server
Mobile Devices
Windows Operating Systems (OS): DOS to Win10
Azure