Violet is a UML editor with these benefits: Very easy to learn and use. Draws nice-looking diagrams. Completely free. Cross-platform. Violet is intended for developers, students, teachers, and authors who need to produce simple UML diagrams quickly.

draw.io is described as 'Privacy-focused diagramming software supporting real-time collaboration, offline mode, and cloud storage without ads or registration' and is a leading Diagram Editor in the development category. There are more than 100 alternatives to draw.io for a variety of platforms, including Web-based, Windows, Mac, Linux and SaaS apps. The best draw.io alternative is Dia, which is both free and Open Source. Other great apps like draw.io are LibreOffice - Draw, yEd Graph Editor, Excalidraw and Lucidchart.
Violet is a UML editor with these benefits: Very easy to learn and use. Draws nice-looking diagrams. Completely free. Cross-platform. Violet is intended for developers, students, teachers, and authors who need to produce simple UML diagrams quickly.

Diagrams is a native diagram editor for macOS. With this productivity tool you can create beautiful, structured diagrams.




Use simple text to quickly create and share diagrams with your team. Improve your documentation, planning and everyday communication with powerful tools for automatic diagram generation.

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.





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!.




Gleek helps you collaborate and discuss database design from the earliest stages of development. Gleek’s keyboard-friendly approach to diagrams allows for a fast, optimized workflow. Gleek supports various diagram types, such as UML diagrams like class and sequence, as well as...




Generate diagrams from text faster than ever and facilitate stakeholders involvement via animation and online collaboration.

Graphs is a simple, yet powerful tool that allows you to plot and manipulate your data with ease. You can import data from two-column files or generate it via an equation. All data can be manipulated using a variety of operations such as the ability to select, cut, translate...





PathVisio is a free open-source pathway analysis and drawing software that allows drawing, editing and analysing biological pathways.



A tool for drawing flowchart and sequence diagrams with a simple, concise and easy to use syntax, in a similar manner as markdown.





That's a plot visualizer. No framed element or connection can be created in this app.