ommpfritt or short omm is a free and open source vector modelling application. It brings the workflow of (3D) modelling tools to the 2D vector graphics world. The design of the application encourages and supports the user to produce maintainable documents, using concepts like procedural modelling and non-destructive editing.
The concept lies in between traditional vector graphic editors (e.g., inkscape), CAD applications and (3D) modelling tools.
Primary use case is creating and editing (animated) info graphics, diagrams, icons and semi-technical drawings.

NOTE: This is only to provide appimages, I am not the developer.