Free Uml Tool Mac Os X
Open source UML tools for MAC OS X
UMLet is a free open source UML modelling tool with a very simple user interface that’s easy for beginners to use. The difference between UMLet and other sequence diagram tools is that it allows you to modify diagrams using a text input tool instead of pop-up dialogs. Jordi Cabot, in a previous answer, mentioned the Eclipse tools. I would like to point out Papyrus (Papyrus projects.eclipse.org), based on the Eclipse modeling tools. Being based on Eclipse, Papyrus will work on the Mac as well as many other pla.
BOUML
BOUML is a free UML 2 tool box allowing you to specify and generate code in C++, Java, Idl, Php and Python. (GPL)
Linux - FreeBSD - Windows - MAC OS X
Gaphor
Gaphor is a UML, SysML, RAAML, and C4 modeling application written in Python. It is designed to be easy to use, while still being powerful. Gaphor implements a fully-compliant UML 2 data model, so it is much more than a picture drawing tool. You can use Gaphor to quickly visualize different aspects of a system as well as create complete, highly complex models. (Apache)
Linux - Windows - MAC OS X
Free Uml Tool Mac Os X Update
Modelio
Modelio is an open source modeling environment. Modelio delivers a broad-focused range of standards-based functionalities for software developers, analysts, designers, business architects and system architects. (GPL)
Cross-platform
Papyrus
Papyrus is aiming at providing an integrated and user-consumable environment for editing any kind of EMF model and particularly supporting UML and related modeling languages such as SysML and MARTE. (EPL)
Cross-platform
UML Designer
UML Designer provides a set of common diagrams to work with UML 2.5 models. The intent is to provide an easy way to make the transition from UML to domain specific modeling. (EPL)
Cross-platform
Free Uml Modeling Tool Mac Os X
Umple
Umple is technology for Model-Oriented Programming. It adds abstractions such as UML associations, attributes, and state machines to object-oriented programming languages such as Java, PHP and Ruby. (MIT)
Cross-platform
Free Uml Software
Easy Uml Tool
6 applications