Yamlvim is a project mainly written in Vim Script, it's free.
YAML dumper/emitter in pure vimscript
This is a mirror of http://www.vim.org/scripts/script.php?script_id=3190
This is the library that is able to represent arbitrary Vim data in YAML 1.2. It also provides a parser that is python YAML parser pyyaml rewritten in pure vimscript.
Documentation: http://vimpluginloader.sourceforge.net/doc/yaml.txt.html Project page: http://sourceforge.net/projects/yamlvim Dependencies (you do not need to install them by yourself, see installation details): vimscript #3631, https://bitbucket.org/ZyX_I/frawor vimscript #3189, http://sourceforge.net/projects/vimoop