Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC).

ELPI implements a lambda-Prolog interpreter enriched with constraint handling rules, to provide an extension language to larger applications written in OCaml.

The pymetar Python interface provides full and easy to use access to the METAR reports available from the NOAA (National Oceanic and Atmospheric Administration, http://www.noaa.gov).

StructuralVariantAnnotation contains useful helper functions for dealing with structural variants in VCF format. The packages contains functions for parsing VCFs from a number of popular callers as well as functions for dealing with breakpoints involving two separate genomic loci encoded as GRanges objects.

ELPI implements a lambda-Prolog interpreter enriched with constraint handling rules, to provide an extension language to larger applications written in OCaml.

libc++ is another implementation of the C++ standard library.