YOU ARE IN A MAZE OF TWISTY LITTLE FORTRAN-FLAGS, ALL ALIKE.
NWCHEM (http://www.nwchem-sw.org/) is a powerful open source electronic structure package. It's unique selling points are
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the Tensor Contraction Engine (TCE) which has an enormous range of post-HF methods (including funky approximate methods such as CC2), which can use Global Arrays (distributed memory) to scale to some really crazy sized calculations on super computers;
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the ability to do plane wave and Gaussian basis set calculations in the same code.
In addition, it has the largest range of unusual DFT functions which I know of in an open source package, including Constrained DFT (CDFT) and range-separated hybrids such as BNL.
However, the documentation is terse, and there are few examples readily found on the internet. Here I will collate (.nw) script examples which I've used over the years in one place, alongside vim syntax highlighting & etc. which I've pulled out of throw-away Gists and emails.
If you've Googled yourself here you're probably stuck with a NWCHEM problem. Good luck!
http://institute.loni.org/NWChem2012/documents/4_NWChem_CC_TCE.pdf - 2012, really quite useful examples
https://wiki.alcf.anl.gov/images/b/bc/NWChem_tutorial.pdf - 2010, Lots of details here; warnings for TCE, memory management etc.