EDraw is a new UML diagram and software diagram drawing tool. Easy to draw uml model diagram, COM and OLE, data flow model diagram, Jacobson Use Case, SSADM Diagram, Nassi-Schneiderman, Booch OOD, ROOM Diagram, Yourdon and Coad and Shlaer-Mellor OOA.

This software is based on famous Hertzsprung - Russell [H-R] diagram in stellar astronomy.

EDraw Network Diagrammer is a professional network diagram and network topology software with rich examples and templates. Easy to draw detailed physica network diagrams, logical network diagrams, Cisco network topology diagrams.

Visual development system intended for database design, modeling, creation, modification and reverse engineering in an easy and powerful way. Accelerates the process of PostgreSQL database creation and makes it clear.

Lets you create UML Class Diagrams and handles the layout automatically. As you enter basic details via dialog boxes, ClassDraw draws your diagram instantaneously based on built-in layout rules. No manual positioning of diagram elements is required.

Diagram Studio is a tool for creating flowcharts, business and technical diagrams. Draw objects, various shapes and link them together. The program features user-controlled points of connection, color shadows, graphics import and export, curves.

Blueprint Software Modeler FREE Community Edition. A free and powerful UML software modeling tool implemented according to the latest UML2.1 standard; integrated with Eclipse3.2. It supportes the most important UML diagrams with rich semantics.

FreeQueryBuilder is a GUI SQL client written in 100% Java. With FreeQueryBuilder, you can create SQL queries without directly writing SQL.