The best Diagram Editor alternative to DataGraph is LibreOffice - Draw, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to DataGraph and four of them are Diagram Editors so hopefully you can find a suitable replacement. Other interesting Diagram Editor alternatives to DataGraph are Google Drawings, MyDraw and Visio Viewer.
Draw lets you produce anything from a quick sketch to a complex plan, and gives you the means to communicate with graphics and diagrams. With a maximum page size of 300cm by 300cm, Draw is a an excellent package for producing technical drawings, general posters, and much else.
Google Drawings, part of Google Drive, allows users to collaborate creating, sharing, and editing images or drawings. It can be used for creating charts, diagrams, designs, flow-charts, etc.
MyDraw is an easy to use, yet powerful diagramming software that lets you create a large number of diagrams like flowcharts, organizational charts, mind maps, network diagrams, floor plans, family trees, business model diagrams, and many more.
VSD Viewer opens Visio drawings directly on a computer without conversion on external Web Servers. Viewing Visio documents is as simple as dragging and dropping off files (with a .vsd, .vsdx, .vdx extension) to the Application window.
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