@phrawzty Yet another example why "open source" was a terrible idea.

Licenses 1-4 are proprietary ones, as they don't respect the 4 freedoms (https://www.gnu.org/philosophy/free-sw.en.html#four-freedoms) and they also don't meet the osd; https://opensource.org/osd

5 & 6 are informal licenses that should not be used even though they barely qualify as free ones.

The listed WTFPL version is the wrong version to use for software - see under "Why is there no “no warranty” clause?"; http://www.wtfpl.net/faq/

The beerware license lacks a warranty disclaimer, so that technically means that the author has granted a warranty.