What is the most permissive open source license?

The MIT License is the least restrictive license out there. It basically says that anyone can do whatever they want with the licensed material, as long as it’s accompanied by the license.

Public domain . This is the most permissive type of software license. When software is in the public domain, anyone can modify and use the software without any restrictions.

The most popular open source license as of this writing is the MIT license . MIT is what’s known as a permissive license, meaning you can use software under the MIT license with minimal restrictions.

As of 2016, the most popular free-software license is the permissive MIT license .