(Europe:) Responsible in the sense of V. i. S. d. P. G./T. M. G.:


Walter Kohl, grad. Engineer
Hauptgasse 31
CH-4600 Olten, So.
Skype: wjksupport
eMail: via Contact form


About us

Our origin goes back to the year 1982, when our founding father and owner until today, Walter Kohl, lifted the trademark "wjk-Software" from the cradle. Since then, a lot has happened under the name, but the content has always remained the same: to develop good software.



We consider the involvement of a lawyer to issue a warning with costs without prior notification to be a violation of the applicable duty to mitigate damages. In this context, we also refer to the judgment of the Federal Court of Justice, file no. VI ZR 144/11 of 27.03.2012.

Liability for content

As a service provider, we are responsible for our own content on these pages in accordance with general laws pursuant to § 7 para.1 TMG. According to §§ 8 to 10 TMG, however, we are not obligated as a service provider to monitor transmitted or stored third-party information or to investigate circumstances that indicate illegal activity. Obligations to remove or block the use of information under the general laws remain unaffected. However, liability in this regard is only possible from the point in time at which a concrete infringement of the law becomes known. If we become aware of any such infringements, we will remove the relevant content immediately. (Source: Disclaimer eRecht24)

Liability for links

Our offer contains links to external websites of third parties, on whose contents we have no influence. Therefore, we can also not assume any liability for these external contents. The respective provider or operator of the pages is always responsible for the content of the linked pages. The linked pages were checked for possible legal violations at the time of linking. Illegal contents were not recognizable at the time of linking. However, a permanent control of the contents of the linked pages is not reasonable without concrete evidence of a violation of the law. If we become aware of any infringements, we will remove such links immediately. (Source: Disclaimer eRecht24)


The content and works created by the site operators on these pages are subject to German copyright law. The reproduction, editing, distribution and any kind of exploitation outside the limits of copyright require the written consent of the respective author or creator. Downloads and copies of this site are only permitted for private, non-commercial use. Insofar as the content on this site was not created by the operator, the copyrights of third parties are respected. In particular, third-party content is identified as such. Should you nevertheless become aware of a copyright infringement, please inform us accordingly. If we become aware of any infringements, we will remove such content immediately.




When you access our site, we send cookies to your computer or other device. Cookies are small files that uniquely identify your browser. Cookies are used to store user preferences and information that we need for navigation. If you use links on our site and are redirected to third-party content, this may result in cookies being set there as well. Their handling is beyond our knowledge and we cannot accept any responsibility for this. Ad placement by third parties -As a third party vendor, Google uses cookies to serve ads on your website. -The use of the DART cookie enables Google to serve ads based on users' visits to this and other sites on the Internet. -Users can opt out of the use of the DART cookie by accessing the privacy policy of Google's advertising network and content advertising network. Privacy policy for the use of social networks Plugins of various social networks are integrated on our pages ("Facebook", "Twitter", "Google", "LinkedIn", etc.). The plugins can be recognized by the respective logo of the publisher. When you visit our pages, a direct connection is established between your browser and the publisher servers via the plugins. The publishers thereby receive the information that you have visited our site with your IP address. If you click on the publisher buttons while logged into your corresponding account, you can link the content of our pages with the content of the social networks. This allows the publishers of the buttons to associate the visit to our pages with your user account. We would like to point out that we, as the provider of the pages, have no knowledge of the content of the transmitted data or its use by the publishers. For more information, please refer to the privacy policy of the respective social networks.