• MATLAB is an integrated technical computing environment that combines numeric computation, advanced graphics and visualization, and a high-level programming language. Versions 7.7 and later of MATLAB have built-in support for reading and writing netCDF data. It's also possible to call netCDF Java library methods from MATLAB, so using it provides the advantages of the Java interface.
• IDL (Interactive Data Language) is a commercial scientific computing environment that combines mathematics, advanced data visualization, scientific graphics, and a graphical user interface toolkit to analyze and visualize scientific data. IDL supports data in netCDF format.
• R is a language and environment for statistical computing and graphics. Three R netCDF interfaces are available: the ncdf package, RNetCDF, and ncvar.

2009 Unidata NetCDF Workshop for Developers and Data Providers > NetCDF APIs