Mr. Filter is a graphical analog active filter design assistant. It helps the user design active filters, from specification through synthesis. Electrical engineers, electronics hobbyists, and students will find that it greatly simplifies the process of filter design. Version 0.2.1 includes the following features:
Download: mrfilter-0.2.1.tar.gz (Apr 25, 2010)
Project Page http://sourceforge.net/projects/mrfilter
License: Mr. Filter is licensed under the GNU General Public License, version 3. It comes with ABSOLUTELY NO WARRANTY.