Here you can find and download freeware software for process and data modeling.

Process modeler is a simple tool for drawing flowcharts that you can print out or copy to another application like a word processing or a presentation tool. Supports the basic flowchart objects like terminators, process (of course), decisions, documents, connectors and more with custom colors and lines.

Data modeler is another simple tool for drawing entity-relationship diagrams that you can print out or copy to another application like a word processing or a presentation tool. The SQL 92 schema generation allows the creation of the tables/columns/constraints designed into a compliant database.