JLink lets users author flow charts based on ISO 5807 and IBM standards. Developers can use JLink to add flowcharts to applications, serve a flow chart over the web in PDF or PNG, or dynamically create a flowchart with Javascript, Python or Ruby scripts
timeline is a script that generates a graphic historic timeline in some formats (html, ps, text, png, etc...) based on a source file. You will need Ruby (http://www.ruby-lang.org) to run this software.