CrypTool 2 provides visualization as well as workflow controls to enable intuitive manipulation and interaction of the cryptographic primitives.
You can directly visit one of the CrypTool topic pages by clicking one of the five buttons here below.
The CrypTool project in general
CrypTool 1 (C++)
CrypTool 2 (C#, .NET, WPF)
JCrypTool (Java, Eclipse, RCP)