Competitors

Other usefull SW on internet to draw graphs...

waveform viewers on wikipedia http://en.wikipedia.org/wiki/Waveform_viewer

gnuplot http://www.gnuplot.info/

matplotlib http://matplotlib.org/

Origin http://www.originlab.com/

Timing Diagrammer Pro http://www.syncad.com/timing_diagrammer_timing_diagram_editor.htm

piscope http://abyz.co.uk/rpi/pigpio/piscope.html

Saleae Logic https://www.saleae.com

IgorPro http://www.wavemetrics.com/