While we like to focus on Open Source software, sometimes, there’s not much offered in a specific category. So far, we’ve not found a very good diagraming tool in the Open Source world. Open Office and its children have a fairly good tool, but these don’t have all of the features we really need to work in the business world. One key piece lacking in the OS world of diagraming tools is the ability to export to Visio format for cross platform compatibility.
OmniGraffle from the Omni Group is what we use extensively here. It’s made for Macintosh only, but covers more than we could ask for in terms of ease of use and it does export to Visio format for PC users to import and use, too. With OmniGraffle, one can build complex diagrams for infographics, network diagrams and process flows. The available objects are easily extended and one can add more “stencils” quite easily.
Simply put, we love OmniGraffle.