Cacoo is described as 'user-friendly online diagramming tool that allows you to create a variety of diagrams such as wireframes, flowcharts, UML diagrams, network diagrams, mindmaps, sitemaps, database diagrams, and more' and is a popular app in the Office & Productivity category. There are more than 50 alternatives to Cacoo for a variety of platforms, including Online / Web-based, Windows, Mac, Linux and iPhone. The best alternative is diagrams.net, which is both free and Open Source. Other great apps like Cacoo are yEd Graph Editor (Free), LibreOffice - Draw (Free, Open Source), Dia (Free, Open Source) and Freeplane (Free, Open Source).
CADE is a compact but powerful 2D vector editor for Windows. It includes basic Microsoft Office Visio functionality and could be used to create diagrams, network diagrams, flowcharts, schemas, maps and so much more.
Thortspace builds a 3D space-map of your thoughts. The 3-D linkages generated by Thortspace spheres facilitated both new insights and new lines of data management, and – almost magically. Thortspace is an invaluable aid to brainstorming prediction.