There are many open-source or free software projects that are likely to be of interest to sigTOOL users. A few are listed below:

 

Neural Modeling PyNN http://pynn.gforge.inria.fr/
  neuroConstruct http://www.neuroconstruct.org/
     
Spike Processing FIND Toolbox http://find.bccn.uni-freiburg.de/
  STA Toolkit http://neuroanalysis.org/wiki/doku.php/welcome
  NeuroSpec http://www.neurospec.org/
     
Image Analysis ImageJ http://rsbweb.nih.gov/ij/
  Fiji http://pacific.mpi-cbg.de/wiki/index.php/Main_Page
     
Ion channel analysis DCProgs http://www.ucl.ac.uk/Pharmacology/dcpr95.html
     
EEG EEGLAB http://sccn.ucsd.edu/eeglab/
  FieldTrip http://fieldtrip.fcdonders.nl/
     
EMG EMGLAB http://www.emglab.net/emglab/index.php
     
Graphics JFreeChart http://www.jfree.org/jfreechart/
  JZY3D http://code.google.com/p/jzy3d/
     
Mathematics Sage http://www.sagemath.org/
     

 

For a more extensive list, visit the INCF Software Page