Your SlideShare is downloading. ×
0
Exploring open source licenses
Exploring open source licenses
Exploring open source licenses
Exploring open source licenses
Exploring open source licenses
Exploring open source licenses
Exploring open source licenses
Exploring open source licenses
Exploring open source licenses
Exploring open source licenses
Exploring open source licenses
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Exploring open source licenses

310

Published on

0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
310
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
2
Comments
0
Likes
1
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide
  • 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
  • Transcript

    • 1. Exploring open source licenses
    • 2. Agenda• Why open source?• GPL• LGPL• BSD• Apache• MIT• Creative Commons• Questions
    • 3. Why open source?
    • 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
    • 10. References• http://www.brighthub.com/computing/linux/articles/1 26127.aspx• http://en.wikipedia.org/wiki/GNU_General_Public_Lic ense• http://en.wikipedia.org/wiki/GNU_Lesser_General_Pu blic_License• http://en.wikipedia.org/wiki/BSD_licenses• http://en.wikipedia.org/wiki/Apache_License• http://en.wikipedia.org/wiki/MIT_License• http://en.wikipedia.org/wiki/Creative_Commons_licen se
    • 11. Questions?

    ×