Bugs and quick fixes by the affected parties rather than waiting for a god fix from the original authors.
GPL allows the distributor to charge a reasonable fee to cover the mailing and production costs. All distributions of derived GPL work must have the GPL license passed along with the work.
Original BSDSC noticeBinary noticeCredit to organizationNo use of name without permissionModifiedBSDDrop #3SimplifiedBSDDrop #2 The good thing about the BSD License is that getting endorsements from previous contributors for your work can get you a great reputation. On the other hand you may miss out on being credited on a successful project because or the 3rd clause in this license
1.1 advertising dropped2.0 Link to copyright notice rather than in each file
4. GPL• GNU General Public License• Linking libraries and Copyleft• V1 (circa 1989) – Source Code – Redistribution constraints based on linking• V2 (circa 2004) – Liberty or death• V3 (circa 2007) – Restricts patent payments for software• Debate on whether static or dynamic linking• Pros – Protects code from being stolen and used in proprietary software• Cons – Can’t allow open source software to accept add-ons that are proprietary as it will have to adopt GPL
5. LGPL• GNU Lesser General Public License – Source code is made available – Allows contributors to link with non-GPL and non- open source libraries – Copyleft• Allows one to create proprietary software using LGPL libraries without having to give up the proprietary license.
6. BSD• Distribute binaries with or without source code.• If with source code, it should contain copyright notice, conditions and disclaimer.• If binary alone, documentation should capture it.• OriginalBSD (1990) (4-clause)• Modified BSD (1999) (3-clause)• SimplifiedBSD (2-clause)
7. Apache• 1.0• 1.1 (2000)• 2.0 (2004)• Covers both patents and copyrights• Perpetual worldwide rights (cannot be revoked)• Royalty and charge-free patents• Distribution requires a copy of Apache license to be passed along• Retain copy of original work• Files modified are explicitly noted• Proper credit should be given to contributors
8. MIT• 1988• Least restrictive• Use source code or binary as you wish• Retain the license• Very similar to SimplifiedBSD
9. Creative Commons• Matured in 2011• Artistic and media works• Copyright but allows people to redistribute as long as you get credit