j Work.ORG is a web portal  focusing on knowledge discovery topics, data-analysis methods and related software primary written in Java and scripting languages, such as Python. Most software programs for scientific computations are published under the GNU Public License and other open-source licenses.
jWork.ORG was founded by Dr. S.Chekanov in 2006 with the goal to promote "scientific computing for science and education". The portal is not-for-profit and does run commercial ads. Certain projects hosted on this portal require membership fees for certain advanced features of the supported programs, which go to "web services, documentation projects and user support".
jWork.ORG runs a software listing catalog with more than 1000 submitted software articles, active user's blogs, forums and programming tutorials on the MediaWiki platform. jWork.ORG publishes free tutorials of scripting languages: Python, BeanShell and MATLAB/Octave language implemented on the Java platform. The portal features user registration for posting articles and blogs, as well as publishes user's web pages with their software.
There are several notable public software projects hosted by the portal, such as DataMelt computational environment, JPort (portable Java desktop applications), RTextDoc (a LaTeX editor), JSlovo dictionary application and others.