Apps similar to Archium include Visual Paradigm. It's paid, but Archi and Diagramo are free. Other options are StarUML, Enterprise Architect, Astah UML and Diagram Designer. In total there are eight UML Modeling Tools like Archium for Windows, Linux, Mac and the web.
Visual Paradigm for UML (VP-UML) is a UML design tool and UML CASE tool designed to aid software development. VP-UML supports key modeling standards such as Unified Modeling Language (UML) 2.4, SysML, ERD, DFD, BPMN 2.0, ArchiMate 2.0, etc.
Hong Kong SAR China
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...
South Korea
High performance and scalable visual modeling tool for the planning, design and construction of business architectures, software and systems. With customers based in all industries, Sparx Systems is a leading vendor of innovative modeling solutions.
Australia
A free and open source modelling tool to create ArchiMate models and sketches. Used by thousands of Enterprise Architects throughout the world.
France
EU
Astah UML is a UML modeling editor with a user-friendly interface. It allows for the creation of various UML 2.x diagrams and mindmaps. The software includes features such as auto-creation of class diagrams, customizable shortcut keys, and merging project files.
Japan
Diagramo is an online flowchart software
United States
Simple vector graphics editor for creating flowcharts, UML class diagrams, illustrations and slide shows.
DenmarkEU
Lightweight, powerful, easy to use, UML tool
Software Ideas Modeler is a lightweight and powerful CASE tool. It supports UML 2.2 diagrams and a lot of other ones. Software Ideas Modeler is freeware (for non-commercial use). Commercial user may use this software only after buying.
SlovakiaEU
