This looks similar to Orange. Orange has a visual designer, easy data access (SQL, arbitrary files) and lots of widgets, but it's a desktop tool not a library a

This looks similar to Orange. Orange has a visual designer, easy data access (SQL, arbitrary files) and lots of widgets, but it's a desktop tool not a library and doesn't standardize the data structures. http://orange.biolab.si/ http://orange.biolab.si/ http://docs.orange.biolab.si/widgets/rst/index.html http://docs.orange.biolab.si/widgets/rst/index.html