Perl interface to libyaml, a YAML implementation

 YAML::XS (old name: YAML::LibYAML) is a Perl interface to Kirill Siminov's
 libyaml library, a YAML Ain't Markup Language (YAML) implementation written
 in C to support the YAML 1.1 specification. The provided Dump and Load
 routines are compatible with the Perl YAML module (see libyaml-perl).