Dia is software used to create charts and diagrams. These are saved as XML files but can be exported to many other formats (EPS, SVG, XFIG, WMF, and PNG).
Supported Language(s): English and 59 other languagesDownload Size (Mb): 34
System Requirements: Mac OS X 10.6 to 10.8. Mac OS X 10.6 users will have to download X11 to use Dia.
Price: Free
Website: https://wiki.gnome.org/Apps/Dia/
Developer: The GNOME Project
Download: http://dia-installer.de/download/macosx.html