An open source system architecture modeling and design tool providing diagrams for logical/physical/infrastructure, data flow, workflow, and more. Lightweight alternative.
Open System Architect (OSA) is an open source system architecture modeling and design tool for IT system architects and systems engineers. It provides an integrated environment for creating different types of architecture diagrams such as logical architecture, technology architecture, physical architecture, infrastructure architecture, data flow diagrams, workflow diagrams, NIST Cybersecurity Framework diagrams, and others.
As an open source tool, OSA is completely free to download and use. It runs on Windows, Linux and Mac OS platforms. The key features include:
OSA is designed to be an alternative to expensive proprietary tools such as BiZZdesign Architect, Mega Suite, System Architect, ARIS Business Architect and others. It offers core system architecture modeling features available in those tools free of cost and without vendor lock-in.