最宽松的协议应该是WTFPL，这条协议的意思是你不需要遵守任何协议，想怎么搞就怎么搞。

WTFPL许可协议全文：
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE Version 2, December 2004Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>Everyone is permitted to copy and distribute verbatim or modifiedcopies of this license document, and changing it is allowed as longas the name is changed. DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. You just DO WHAT THE FUCK YOU WANT TO.