Release 1.x.x (before 2018)
Prior to being open-source in 2018, Taskflow was internal to the OpenTimer project sponsored by the NSF and DARPA. Later, we decided to open our knowledge of parallelizing large-scale parallel applications by making Taskflow a standalone open-source project that can benefit generic C++ developers.
Due to the difference license agreement imposed by OpenTimer at an earlier stage (i.e., users and funding agency requirement), we are unable to open the source of Taskflow in the 1.x line. Starting from 2.x, we have switched to MIT license and made the source completely open and transparent to the community.