QA Tools provides links to QA tools developed for science team and user community Unix
MODIS/VIIRS Reprojection Tool Reprojection tool to handle all MODIS/VIIRS Land data products, including L3/L4 gridded Sinusoidal 10-degree tiled data products as well as swath based L1B and L2 products. Python 3.5+, Linux   
HDF and HDF-EOS The NCAR Command Language - data set examples - scripts and graphics that you can download and use Solaris, AIX, IRIX, Linux, MacOSX, Dec Alpha, and Cygwin/X running on Windows
MODIS Swath-to-Grid Toolbox a set of software tools that reads HDF-EOS files containing MODIS swath data and produces flat binary files containing gridded data in a variety of map projections Unix, with a standard C compiler, also requires Perl 5.0 or higher and IDL 5.0 or higher
HDF-EOS to GeoTIFF converter (HEG) converts many EOS products written in HDF-EOS to GeoTIFF, native binary or HDF-EOS Grid, also has re-projection, resampling, subsetting, stitching (mosaicing), and metadata creation capabilities Linux , Macintosh , SGI , Sun, Windows
MODIS Land Tile Calculator converts latitude/longitude decimal degrees to MODIS Tile grid and Line/Sample coordinates and vice-versa online tool