Essential – Open Source EA Tool

The Essential Enterprise Architecture tool helps you to understand how the people, functions, processes, IT applications, data, infrastructure, suppliers and customers interact across the business. Essential enables you to spot opportunities to improve and to assess the impacts of planned changes to the operating model.

The tool provides a high-level model of the business that can be used to support planning, decision-making and communication across the organization. It also helps you to understand how your organization is operating today, how it has evolved over time and where you want it to go in future.

Essential is a data-driven approach to enterprise architecture software that provides a 360 view of your business. It can be used by EA teams, Business teams and project teams as well as senior management and is designed to drive digital transformation, operational efficiency and strategic planning in a digital world.

The Essential Open Source EA tool is for teams that seek to do better Enterprise Architecture and for those with no budget for a tool. It has evolved based on input from practising architects from both the EA community and from the project sponsors EAS. Essential Open Source is available as an open-source download from our web site.

We built Essential OS as a suite of freeware tools to support our EA consulting needs and the needs of Enterprise Architects in supporting the CIO, CxO’s and, ultimately, the entire organisation.

This is a free EA tool and support is via the forums.


Key Features Include:


Rich ontology based meta-model




Easily extensible meta-model and views


140+ views and visualisations

Contact Us