Software license.

• BSD: It is a software license, it is free being so close to the public domain, it allow use the source.
• GNU/LGPL: It is a software license, similar to the GNU, but there aren't allow acts apart copy, distribute or manipulate it.
• GNU: It is the most frequently used software license. It allow to manipulated, use, study and copy it.It is the first copyleft license for general use.
• MPL: It is a open source software license, it belogs to Mozilla.
• Multilicense is distributing software under two or more different sets of terms and conditions.