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CrypTool 2 is open source. Anyone interested in adding functionality is welcome to do so. CrypTool 2 is based on the latest .NET Framework (currently .NET 4.0) and has a pure-plugin architecture, which makes it very easy for new volunteers to develop additional features.
This page is an archive of all current builds of CrypTool 2.
The builds run on 32 and 64 Bit Windows. Please note that you need the Microsoft .NET Framework 4.7.1 to run CrypTool 2.
No admin rights are needed for the installation.
Each build is available as an .exe installer and as a compressed zip archive. Both have their own online update mechanism. The .exe installer supports registration of start menu entry, desktop link, and Explorer file type, but does not support more than one .exe installation. If in doubt, use the .exe installer.


Stable versions and releases

The most recent release version of CrypTool 2 is CrypTool 2.1 (Stable Build 8186.5). It and can be downloaded here.

Nightly Builds

Nightly builds are compiled every night based on the most current version of the source code checked into the SVN repository.
Please be aware that these builds are work in progress. They are by no means guaranteed to be stable, and they may contain experimental features that are not yet fully functional.
CrypTool 2.1 (Nightly Build 8366.1) - September-09-2019 02:21:11 - 177.846.401 Byte - ZIP file EXE installer
Setup CrypTool 2.1 (Nightly Build 8366.1).exe
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CrypTool 2.1 (Nightly Build 8366.1).zip
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CrypTool 2.1 (Nightly Build 8360.1) - September-08-2019 02:17:31 - 177.801.064 Byte - ZIP file EXE installer
Setup CrypTool 2.1 (Nightly Build 8360.1).exe
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CrypTool 2.1 (Nightly Build 8360.1).zip
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CrypTool 2.1 (Nightly Build 8358.1) - September-07-2019 02:23:37 - 177.778.329 Byte - ZIP file EXE installer
Setup CrypTool 2.1 (Nightly Build 8358.1).exe
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CrypTool 2.1 (Nightly Build 8358.1).zip
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CrypTool 2.1 (Nightly Build 8357.1) - September-06-2019 02:18:50 - 177.175.877 Byte - ZIP file EXE installer
Setup CrypTool 2.1 (Nightly Build 8357.1).exe
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CrypTool 2.1 (Nightly Build 8357.1).zip
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CrypTool 2.1 (Nightly Build 8354.1) - September-04-2019 02:20:49 - 176.766.388 Byte - ZIP file EXE installer
Setup CrypTool 2.1 (Nightly Build 8354.1).exe
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CrypTool 2.1 (Nightly Build 8354.1).zip
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CrypTool 2.1 (Nightly Build 8352.1) - September-03-2019 02:17:49 - 176.762.445 Byte - ZIP file EXE installer
Setup CrypTool 2.1 (Nightly Build 8352.1).exe
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CrypTool 2.1 (Nightly Build 8352.1).zip
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CrypTool 2.1 (Nightly Build 8349.1) - August-28-2019 02:18:44 - 176.764.947 Byte - ZIP file EXE installer
Setup CrypTool 2.1 (Nightly Build 8349.1).exe
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CrypTool 2.1 (Nightly Build 8349.1).zip
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CrypTool 2.1 (Nightly Build 8343.1) - August-27-2019 02:18:37 - 176.763.583 Byte - ZIP file EXE installer
Setup CrypTool 2.1 (Nightly Build 8343.1).exe
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CrypTool 2.1 (Nightly Build 8343.1).zip
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CrypTool 2.1 (Nightly Build 8339.1) - August-26-2019 02:18:26 - 176.762.665 Byte - ZIP file EXE installer
Setup CrypTool 2.1 (Nightly Build 8339.1).exe
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CrypTool 2.1 (Nightly Build 8339.1).zip
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CrypTool 2.1 (Nightly Build 8335.1) - August-25-2019 02:18:27 - 176.762.134 Byte - ZIP file EXE installer
Setup CrypTool 2.1 (Nightly Build 8335.1).exe
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CrypTool 2.1 (Nightly Build 8335.1).zip
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