Open source licenses grant permission for anybody to use, modify, and share licensed software for any purpose, subject to conditions preserving the provenance and openness of the software. The following licenses are sorted by the number of conditions, from most (GNU AGPLv3) to none (Unlicense).
Likewise, Bruce Perens' license of choice is the GNU GPL. (NOTE: All of my claims are sourced from Bruce Perens himself in the documentary Revolution OS) In the end, copyleft and permissive software both have roles to play in society. Fair License (20) Frameworx Open License (3) GNU General Public License version 2.0 (114,572) GNU General Public License version 3.0 (21,299) GNU General Public License with Classpath exception (142) GNU Library or Lesser General Public License version 2.0 (19,301) GNU Library or Lesser General Public License version 3.0 (3,679) The GNU General Public License (GPL) is a computer software copyleft license. This license lets the user of the software use a program in many of the same ways as if it were public domain. They can use it, change it, and copy it. They can also sell or give away copies of the program with or without any changes they made to it. Jun 29, 2007 · The GNU General Public License is a free, copyleft license for software and other kinds of works. The licenses for most software and other practical works are designed to take away your freedom to share and change the works.
The brief summary: In the event you distribute code or a binary that includes code with one of these license, your obligations differ. In the case of the MIT license, you are obligated to provide attribution with your code or binary (e.g. say "thi
Fair License (20) Frameworx Open License (3) GNU General Public License version 2.0 (114,572) GNU General Public License version 3.0 (21,299) GNU General Public License with Classpath exception (142) GNU Library or Lesser General Public License version 2.0 (19,301) GNU Library or Lesser General Public License version 3.0 (3,679) The GNU General Public License (GPL) is a computer software copyleft license. This license lets the user of the software use a program in many of the same ways as if it were public domain. They can use it, change it, and copy it. They can also sell or give away copies of the program with or without any changes they made to it.
Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users.
FSF Licensing & Compliance Team — Free Software Foundation Feb 10, 2005