JCrypTool (JCT) is an open-source e-learning platform, allowing to experiment comprehensively with cryptography on Linux, MAC OS X, and Windows.
Land der Ideen - Statements
"In the last few years, CrypTool has become to an indispensable part of my lectures in IT security. Due to its broad concept, the clear structure, and the explicatory and illustrative character, the software is suitable both for the lecturer's presentations and the student's self learning. CrypTool is very stable and consistent."
Professor Roßbach, Frankfurt School of Finance and Management