This is the GNU D compiler, which compiles D on platforms supported by the gcc compiler. It uses the gcc backend to generate optimized code.

Red Hat Fence Agents is a collection of scripts to handle remote power management for several devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster.

This is the GNU Modula-2 standard library that comes with the gm2 compiler.

This package contains the headers and static library files needed to build GNU Fortran applications.

dnaio is a Python 3 library for fast parsing of FASTQ and also FASTA files. The code was previously part of the cutadapt tool and has been improved since it has been split out.

Testing with databases can be tricky. If you are developing a system married to a single database then you can make some assumptions about your environment and ask the user to provide relevant connection information. But if you need to test a framework that uses DBI, particularly a framework that uses different types of persistence schemes, then it may be more useful to simply verify what the framework is trying to do -- ensure the right SQL is generated and that the correct parameters are bound. DBD::Mock makes it easy to just modify your configuration (presumably held outside your code) and just use it instead of DBD::Foo (like DBD::Pg or DBD::mysql) in your framework.