Chartist is a comprehensive flow charting package.

Create and print flow charts and organizational charts using TrueType fonts, graphics, color, selectable line styles, a customizable shapes palette, curved or square turns, BMP graphics, and a variety of symbol, border and arrowhead designs. Lines can be manually or automatically 'routed' (re-drawn when you move symbols around on screen). Import text, WMF files, and bitmap graphics to create your own symbols. Export charts to other applications. The ZIP file also includes a 16-bit version (for Windows 3.1).