::Free Statistics and Forecasting Software::

All rights reserved. The non-commercial (academic) use of this software is free of charge. The only thing that is asked in return is to cite this software when results are used in publications.



Wessa.net is rapidly growing and evolving. It is very important to have old versions available for the purpose of error tracking, and reproducability of published research. In future we intend to enable users to store a compendium of data, links to the appropriate versions of employed software modules, and accompanying texts in html or pdf format.

The following old versions are available :

• 1.1.21-r4 - This is a stable version that was used until August 2007. With funding from the K.U.Leuven Association a Compendium Platform is being developed for the purpose of archiving statistical computations that can be reproduced and reused with R modules (http://www.freestatistics.org/). The new Wessa.net version (1.1.22) seamlessly integrates this Compendium Platform (incl. archive and retrieval of statistical computations).
• 1.1.20 - The framework for R Modules was introduced in this version. Thanks to the feedback from a large number of users we were able to improve and extend the R Framework. The new version (1.1.21) offers some exciting new features that will bring us closer to a compendium publishing environment.
• 1.1.19 - This version was mainly used to test the new framework for R Modules. Even though this is a stable version, we are able to release the next version much sooner than anticipated, introducing some exciting new features such as: a history list, improved user interface, improved management of R servers (load balancing), and various under-the-hood improvements.
• 1.1.18 - This is a stable release that was used during the first half of the year 2006. It also contains the first few R Modules that were introduced for testing purposes. The higher version (1.1.19) adds the first release of the R Modules framework.
• 1.1.17 - This is the first version in the archive. At present there are no known bugs in this version. The higher version (1.1.18) adds various types of new features such as: news, faq, easier color switching, better naviagtion, ...

The versions in this archive will be stored as long as (internet) technology allows it to be executed.

P. Wessa, last update August 31, 2007

To cite Wessa.net in publications use:
Wessa, P. (2026), Free Statistics Software, Office for Research Development and Education,
version 1.2.1 (new version), URL https://www.wessa.net/

© All rights reserved. Academic license for non-commercial use only.
The free use of the scientific content, services, and applications in this website is granted for non commercial use only. In any case, the source (url) should always be clearly displayed. Under no circumstances are you allowed to reproduce, copy or redistribute the design, layout, or any content of this website (for commercial use) including any materials contained herein without the express written permission.

Information provided on this web site is provided "AS IS" without warranty of any kind, either express or implied, including, without limitation, warranties of merchantability, fitness for a particular purpose, and noninfringement. We use reasonable efforts to include accurate and timely information and periodically update the information, and software without notice. We make no warranties or representations as to the accuracy or completeness of such information (or software), and it assumes no liability or responsibility for errors or omissions in the content of this web site, or any software bugs in online applications. Your use of this web site is AT YOUR OWN RISK. Under no circumstances and under no legal theory shall we be liable to you or any other person for any direct, indirect, special, incidental, exemplary, or consequential damages arising from your access to, or use of, this web site.

Software Version : 1.2.1 (new version)
Algorithms & Software : Patrick Wessa, PhD
Server : www.wessa.net

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