vcflib is a C++ library for parsing and manipulating VCF files.
See versions of vcflib which are available:
$ module avail vcflib
Notes from the sysadmin during installation:
git clone --recursive https://github.com/ekg/vcflib.git cd vcflib make sudo mkdir -p /export/apps/vcflib/git-7f1575e sudo cp -r bin/* /export/apps/vcflib/git-7f1575e
See vcflib's README for a complete documentation of the tools included.