Apps similar to Vexlio include Inkscape, which is free and open source. Other options are draw.io, yEd Graph Editor, Scissor and Lucidchart. You can choose from more than 10 Diagram Editors like Vexlio for Mac, Windows, the web, Linux and Android.
Shapes is a simple, elegant diagramming app for OS X. Shapes gives you all of the most important features you need in a diagramming tool without all the extra cruft, and without breaking the bank!.
United States
ConceptDraw DIAGRAM v14 is the only product that supports Visio legacy, runs on macOS and Windows, and is a perpetual license. Import/Export VDX, VSDX, VSSX and Import VSD, VSS files.
Ukraine
Merge Plan is a user friendly diagram application. It is fully compatible with most diagram file formats. It is a great value in comparison to other diagram applications. It is part of Merge Soft Office.
