TinyCAD-OnBlock is schematic capture for the additional purpose of using TinyCAD as a Function Block Editor.
TinyCAD-OnBlock = TinyCAD 3.00.04 + KiCad Netlist + Arduino(C++) Code Composer + FB Library
This program keeps on GNU LGPL.
Some TinyCAD sources are modified and 2 files(OnBlock.h, OnBlock.cpp) are added in src by countrymaker.
The modified lines of source files are marked with "// cmaker".
TinyCAD is an open source circuit capture program. The offical web-site is www.tinycad.net
If you want to install TinyCAD then go to the Downloads page.
Help on building TinyCAD from source is available in the Wiki

