Open source software, software where the source code is publicly available and which is licensed with an open source license.

Examples of free software license / open source licenses include the Apache License, BSD license, GNU General Public License, GNU Lesser General Public License, MIT License, Eclipse Public License and Mozilla Public License.

Open source software, software where the source code is publicly available and which is licensed with an open source license.

Examples of free software license / open source licenses include the Apache License, BSD license, GNU General Public License, GNU Lesser General Public License, MIT License, Eclipse Public License and Mozilla Public License.

Open source software, software where the source code is publicly available and which is licensed with an open source license.

Examples of free software license / open source licenses include the Apache License, BSD license, GNU General Public License, GNU Lesser General Public License, MIT License, Eclipse Public License and Mozilla Public License.

Mozilla Firefox has already released Mozilla Firefox 3 to the public and will continue updates and beta testing to this product to improve it for the users.

MPL stands for Mozilla Public License. NPL (Netscape Public License) gives Netscape the privilege of re-licensing the modifications that is made to the software, they can take those modifications private, improve them and refuse to give the result. Netscape created the MPL, to address this concern. The MPL is much like the NPL but does not contain the clause that allows Netscape to re-license the modifications made.In short, The NPL and MPL allows you to take modifications private.