OST - LICENSE

 OST - LICENSE

License:

• It is a legal contract between the software developer and the product's end user.
  
• License is a document that specifies permission and rights.
  
• A license should be automatic, and should not require any signature.
• License has terms and conditions to use, modify, and distribute a work.
• It has terms and conditions for using software or intellectual property.
• License can be used for commercial or non-commercial purposes.
• Various types of licenses exist with differing requirements and restrictions 

Examples:

• MIT License
• GNU General Public License (GPL)
• Apache License
• BSD Licenses (e.g., BSD 2-Clause License, BSD 3-Clause License)
• Mozilla Public License (MPL)

                           

There are two types of copyleft open-source licenses:

1. Copyleft
2. Permissive

 

1. Copyleft:

• Grants the right to freely distribute and modify software.
• Ensures everyone has the freedom to copy and change it.

Examples:

• GNU General Public License (GPL)
• GNU LGPL (Lesser General Public License)
• Mozilla Public License (MPL)
• Eclipse Public License (EPL)

 (A) Strong copyleft:

Strong copyleft requires derivative works to be distributed under the same license.

(B) Weak copyleft:

Weak copyleft restrictions to changes made to the copyleft-licensed software.

 2. Permissive:

• Non-copyleft license.
• Guarantees freedom to use, modify, and redistribute with minimal restrictions.
• Allows for more flexibility in integrating the software into other projects.

Examples:

1. MIT License
2. BSD License 
3. Apache License.