...that CrypTool is open source?
Land der Ideen - Statements
"CrypTool includes an unparalleled array of cryptologic tools, which are ideal for anyone who wants to study cryptography or cryptanalysis. CrypTool is a free application, readily available on the Internet."
Prof. Mark Stamp, San Jose, California, USA
New Release of CrypTool — CT 1.4.40 released
A new release of CrypTool 1 was published on September 21, 2017.
This version is available in 6 languages (German, English, Spanish, Polish, Serbian, and French), and it contains many bug fixes and corrections.Read more ...
CryptoPrograms with Online Analyzers
New on this site are analyzers for solving classical ciphers without any knowledge of the keyword and, in many cases, the key length. Routines for solving around 40 cipher types are provided.