Object Constraint Language Environment is described as 'OCLE is a UML CASE Tool offering full OCL support both at the UML metamodel and model level' and is a UML Modeling tool in the development category. There are 2 alternatives to Object Constraint Language Environment for a variety of platforms, including Mac, Windows, Linux, Web-based and Android apps. The best Object Constraint Language Environment alternative is PlantUML, which is both free and Open Source.
PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various application such as wiki, text editor, IDE, programming language, documentation generator, and others.
StarUML is a program to develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform running on Win32 platform. The goal of the StarUML project is to build a software modeling tool and also platform that is a compelling replacement of commercial UML...
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It works well when you need to understand and model the problem fast and easy with your team and always have the source of truth on Git!