QFitsView is a FITS file viewer similar to SAOimage, DS9, and the like. It was written using the cross-platform QT library and thus runs under Microsoft Windows as well as many flavors of UNIX and MAC OS-X.
A new version (2.0) is released.
QFitsView includes the complete DPUSER - The Next Generation application. For DPUSER, extensive documentation is available, see link below. The graphical front-end (i.e. QFitsView itself) is also documented, and should be quite intuitive to use.
For Microsoft Windows, you need this binary (15 MB) and the MinGW library (16 kB). Put both in a common directory.
For Linux, you need this binary (15 MB). Don't forget to make this executable (chmod a+x QFitsView_2.0.linux)!
For Mac OSX, copy this disk image and copy the Application to your favorite location (13 MB). This is a universial binary.
To use the plotting capabilities of DPUSER, copy grfont.dat and rgb.txt to some directory and create an environment variable named PGPLOT_DIR that points to that directory.
You can also download the documentation in gzipped tar format and extract to your local disk. Don't forget to tell QFitsView where this is (In options->Preferences->Paths)! (This is not necessary for the MAC OS-X disk image which already includes the documentation.)
If you want to compile QFitsView yourself,
download the source code (31 MB) and follow the instructions in the README file.