This topic contains packages to typeset flow (and similar) diagrams, including Nassi-Schneiderman.
Symbology to draw chemical plants with TikZ.
Create struktex code.
Draw flow diagrams in picture mode.
Shapes for drawing flowcharts, using TikZ.
Easily typeset Control Block Diagrams and Signal Flow Graphs.
Drawing Nassi-Shneiderman diagrams and flowcharts.
Draw Sankey diagrams with TikZ.
Simple nodes in four colors written in TikZ for LaTeX.
Draw Nassi-Shneiderman charts.
Create “railroad” syntax diagrams.
Symbols collection for typesetting Sequential Function Chart (SFC) diagrams (PLC programs).