The arrangement of the nodes is not limited to the classical tree structure: Cayra gives a radial character to its diagrams, allowing the elements to be automatically rearranged without altering their meaning.
The nodes can be given textual information with an image and the results can then be saved as an image in JPEG or HTML.
Other applications similar to Cayra that can be used for the same purpose are: FreeMind (free), NovaMind Express (shareware) or Dia(free).
For Windows Vista or Windows XP with Service Pack. Requires Microsoft. NET Framework 3.0.