Stencil Sheets: Visio includes all sorts of stencil objects.The pages are made available with tabs below the current page. Multi-page Drawings: A drawing may consist of multiple pages.Measurement Objects available as a stencil make it easy to annotate drawings with true to scale measurements. Drawing scale: Scaling between paper size and drawing size is necessary for CAD-like drawings with real world dimensions.Text Annotation: All objects are easily annotated with a text box whose properties (position, size, rotation etc.) follows those of the annotated object.The auto-routed connections are easily adjusted manually.Line Jumps may be added to crossing lines: Arc, Gap, Square.

User definable Connection Points on objects.

Connector styles: Right Angle or Straight.

Powerful Connection Tool: Makes it very easy to create all sorts of diagrams with connecting lines, arrows etc.

Seen from a regular user of Visio, the following features are missing from Inkscape: Visio has an extensive set of Stencil Sheets and when it comes to implementing Library functionality and ways to manage predefined styles and objects it may serve as a useful reference.

Also, Visio has configurable snap-to-points on each corner and middle of lines (configurable) to aid with quickly connecting links and shapes together. When drawing a shape Visio includes a diagonal line and other hints to make it easier to draw symmetrically. Whether you like it or not there is a demand for features from technical drawing software in Inkscape. Many users have a need for technical drawing tools and are not well catered for by other Open Source software. Visio is a vector graphics program for creating diagrams and technical drawings. Please post links to screenshots and/or insights of this vector app.

Inkscape drawing to vector