The programs conception from flowcharts present  multiple advantages. 

Here are principals: 

• Accessible to the beginner having even no experience of programming    --> easy Starting 
• Fast and reliable conception of complex programs for microcontrolers   --> reduced development 
• High-level graphic language using normalized symbols ISO5807            --> Big legibility and portability 
  

More (in french language).

Download

• AlgoDraw : Free software to draw flowcharts
• AlgoPic  : Integrated software for development on PIC micro with flowcharts (french version only)
• Algorigram Studio :  Dévelopment with flowcharts for HC11, HC12, PIC, AVR, Delphi, C++Builder etc.. Built in simulator.

Screen capture of AlgoDraw