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Re:Flow-based Programming by samuell on Saturday January 10, 2015 @06:30PM (#8868363)
The one I did know in python was PaPy:

https://code.google.com/p/papy/

Will have to have a closer look at this one as well, though.

Re:Flow-based Programming by i000 on Sunday January 11, 2015 @11:13AM (#8870289)
Author of PaPy here.

Thanks for giving PaPy a try. Although PaPy [https://github.com/mcieslik-mctp/papy] has never gained traction :(, I have been using it daily for over 5 years (no bugs in the scheduler so far). By now our PaPy based genomics pipelines have probably processed petabytes of data.

Re:Flow-based Programming by harlowja on Saturday January 10, 2015 @06:45PM (#8868413)
Cool, looks similarish; feel free to jump on freenode (usually during weekdays) and ping me, channel #openstack-state-management or #openstack-oslo

Pretty diagram also @ https://wiki.openstack.org/wiki/TaskFlow#Big_picture ;)