SmartDraw is a windows-only application for creating calendars, drawing organizational charts, flowcharts, network diagrams, or any type of concept map. It is commercial software but does have a free trial.
Although perhaps not as flashy, CmapTools is an open source, free, cross-platform software tool for concept mapping. Inspiration is a popular commercial concept mapping software tool in educational contexts (which I have enthusiastically endorsed previously) but is much more costly than a free tool like CmapTools.
Do you have another concept mapping application you like besides these? If so please comment here and provide a link to the tool. 
Jan Lanzing’s Concept Mapping Homepage is a bit dated but does have links to other software alternatives.
On this day..
- Piano Scales? There's an App For That! - 2011
- Creative Commons and Flickr - 2010
- Emotion and text-based communication - 2010
- Any interactive website is poison - 2010
- Poll Results: How much would you / your school pay for PollEverywhere? - 2010
- The Night Before Valentine's Day - 2010
- New WordPress design thanks to Lightword - 2010
- Film on the Fly: Get your Cell Phones Ready for Movie Making! - 2009
- Mountains on the descent into Portland - 2009
- Copyright for Educators - 2009
