UML Tutorial - UML Unified Modelling Language - Sparx Systems. yEd - Graph Editor. yEd is a powerful desktop application that can be used to quickly and effectively generate high-quality diagrams.
Create diagrams manually, or import your external data for analysis. Our automatic layout algorithms arrange even large data sets with just the press of a button. yEd is freely available and runs on all major platforms: Windows, Unix/Linux, and Mac OS X. The latest release is version 3.12.2. Power-architect - Google Code. The SQL Power Architect Community Edition is a cross-platform, open-source data modeling tool with a GUI and an embeddable API.
For more information on the Community or Enterprise Edition of SQL Power Architect, please visit SQL Power Architect 1.0.7 Released! Jailer. UML tools for software development and Modelling - Enterprise Architect Full Lifecycle UML modeling tool. Main Page - K-3D. Open Solution Company: UML for Eclipse and BPMN designer. BOUML - a free UML tool box. Gliffy.com - Create and share diagrams online.
StarUML - The Open Source UML/MDA Platform.