FREE SOFTWARE LICENSE PROVIDER
Most Free Software is released under one of this following license agreements.
- GNU General Public License
- GNU Lesser General Public License
- BSD Licenses
- Mozilla License
- MIT License
- Apache License
- The “as-in” Release Model
GNU General Public License
The strict GPL license is the most common, and most of the software is released under it. The Linux Kernel (version 2.0) is released under this license, and also we know that the GNU Compiler Collection (GCC) also released under this license.
GNU Lesser General Public License
GNU General Public License is very strict. Lesser General Public License was released as a compromise between GPL license and the more permissive license such as the BSD License and the MIT license.
This license does not carry the ‘inheritance’ as GPL license does. This means the software can be released under this license without having to be released under the GPL, or the LGPL license itself.
Also, have an eye on this to understand the concept easily: –
This license is also known as a “BSD-Style” license. The BSD license is more permissive than the GNU license. This license was used for the Berkely Software Distribution (BSD), a Unix-like operating system for which this license was named.
- Mozilla License
The Mozilla Public License was developed for software released by the Mozilla Foundation. This is a “Weak Copy Left” license, that has since been adopted, in the modified version, by several other companies and organization.
Some of the software released under this license are Mozilla Firefox, Mozilla Thunderbird, and the Mozilla Application Suite.
This license was originated at the Massachusetts Institute of Technology, as a public domain license. MIT License is one of the most permissive licenses. X Windows System is released under this license.
This license is incompatible with the GPL since it explicitly allows modification to the software itself to remain secret and said modification to be sold.
This does not mean that software released under this license is not Free software since it does require the party releasing the software to adhere to freedom. The Apache Web Server is released under this license.
The “as-in” Release Model
This usually means that the released code is simply placed in the public domain, with no restrictions whatsoever apart from not “claiming rights” to that code, and not claiming that the user wrote it.
There are actually quite a few dedicated-purpose libraries released under this license, which do something very specific, very efficiently.
Also read:-What is Free and Open Source Software-FOSS
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