VisTrails is an open-source scientific workflow and provenance management system developed at the University of Utah that provides support for data exploration and visualization. Whereas workflows have been traditionally used to automate repetitive tasks, for applications that are exploratory in nature, such as simulations, data analysis and visualization, very little is repeated—change is the norm. As an engineer or scientist generates and evaluates hypotheses about data under study, a series of different, albeit related, workflows are created while a workflow is adjusted in an interactive process. VisTrails was designed to manage these rapidly-evolving workflows.

TLA-team: It is a workflow management tool for visualizing workflows, for example for text processing in a graphical way and managing and analyzing meta-data. It works with xml files and databases and it comes with a big set of predefined boxes. Not always stable. Offers a python console and a toolkit.

www.vistrails.org

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