Suggestions are more than welcome. I'm currently keeping the post up-to-date with suggested tools and repositories.
This also really helpful (pity it's relatively unknown):
https://github.com/dbro/csvquote
And:
http://en.wikipedia.org/wiki/GNU_Core_Utilities (section "Text utilities")
http://directory.fsf.org/wiki/Textutils
Run "$ info coreutils"