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Bifurcation analysis for delay-differential equations
...The original DDE-BIFTOOL webpage at KU Leuven [1] stores versions up to 3.0 and their documentation.
[1] <http://twr.cs.kuleuven.be/research/software/delay/ddebiftool.shtml>
[2] <https://www.gnu.org/software/octave>
Further tutorials (by M Bosschaert) at <https://sites.google.com/a/uhasselt.be/maikel-bosschaert/home> (pdf files).
A GUI program written in Perl and utilizing Tk that is meant to solve equations commonly found in math and science. Current equation set is based upon High School Geometry, Algebra II, Trigonometry, and Chemistry with more to come.