SLIDE 1
Copyleft for the Rest of Us
Linuxwochen Linz 2016
28.04.2016 Linuxwochen Wien
About me
- DevOps Engineer
- Security Engineer
- FLOSS Enthusiast
– FSFE Group Linz
coordinator since 2013
– FSFE Austrian team
(only recently)
Copyleft for the Rest of Us Linuxwochen Linz 2016 About me DevOps - - PowerPoint PPT Presentation
Copyleft for the Rest of Us Linuxwochen Linz 2016 About me DevOps - - PowerPoint PPT Presentation
Copyleft for the Rest of Us Linuxwochen Linz 2016 About me DevOps Engineer Security Engineer FLOSS Enthusiast FSFE Group Linz coordinator since 2013 FSFE Austrian team (only recently) 28.04.2016 Linuxwochen Wien Outline
SLIDE 2
SLIDE 3
28.04.2016 Linuxwochen Wien
Outline
- Basic FLOSS concepts
- Share-alike/copyleft concepts
- Copyleft advantages
– For the FLOSS community – For companies
SLIDE 4
28.04.2016 Linuxwochen Wien
Basic concept: FLOSS
You
FLOSS program Binary Source
</>
get
SLIDE 5
28.04.2016 Linuxwochen Wien
Basic concept: FLOSS
You
FLOSS program Binary Source
</>
get source
SLIDE 6
28.04.2016 Linuxwochen Wien
Basic concept: FLOSS
You
FLOSS program Binary Source
</>
get source rights
SLIDE 7
28.04.2016 Linuxwochen Wien
MC #1: No commercial use
You
FLOSS program Binary Source
</>
Upstream developer maintain
SLIDE 8
28.04.2016 Linuxwochen Wien
MC #1: No commercial use
You
FLOSS program Binary Source
</>
buy Upstream developer maintain
SLIDE 9
28.04.2016 Linuxwochen Wien
MC #1: No commercial use
You
FLOSS program Binary Source
</>
buy Upstream developer maintain get
SLIDE 10
28.04.2016 Linuxwochen Wien
MC #1: No commercial use
You
FLOSS program Binary Source
</>
buy Upstream developer maintain get
source
SLIDE 11
28.04.2016 Linuxwochen Wien
MC #1: No commercial use
You
FLOSS program Binary Source
</>
buy Upstream developer maintain get
source rights
SLIDE 12
28.04.2016 Linuxwochen Wien
Basic concept: share-alike
You SO else
FLOSS program Binary Source
</>
get
FLOSS program Binary Source
</>
share SO else SO else
source rights
source rights source rights source rights
SLIDE 13
28.04.2016 Linuxwochen Wien
Share-alike travels downstream
You SO else
FLOSS program Binary Source
</>
get
FLOSS program Binary Source
</>
share SO else SO else
SO else FLOSS program Binary Source</>
share SO else SO else SO else FLOSS program Binary Source</>
share SO else SO else SO else FLOSS program Binary Source</>
share SO else SO elsesource rights
source rights source rights source rights
source rights source rights source rights SLIDE 14
28.04.2016 Linuxwochen Wien
Commercial share-alike
You SO else
FLOSS program Binary Source
</>
get
FLOSS program Binary Source
</>
share SO else SO else
SO else FLOSS program Binary Source</>
share SO else SO else SO else FLOSS program Binary Source</>
share SO else SO else SO else FLOSS program Binary Source</>
share SO else SO elseUpstream developer maintain
source rights
source rights source rights source rights
source rights source rights SLIDE 15
28.04.2016 Linuxwochen Wien
Share-alike: Weak copyleft
You
FLOSS libary Binary Source
</>
get
non-free program Binary
SO else
FLOSS libary Binary Source</>
link
source rights
source rights
SLIDE 16
28.04.2016 Linuxwochen Wien
Share-alike: Weak copyleft
You
FLOSS libary Binary Source
</>
get
FLOSS libary Binary Source
</>
share SO else
source rights source rights
SLIDE 17
28.04.2016 Linuxwochen Wien
Share-alike: Strong copyleft
You
FLOSS libary Binary Source
</>
get
FLOSS libary Binary Source
</>
share SO else
source rights source rights
SLIDE 18
28.04.2016 Linuxwochen Wien
Share-alike: Strong copyleft
You
FLOSS libary Binary Source
</>
get
FLOSS libary Binary Source</>
SO else
FLOSS program Binary Source</>
link develop
source rights source rights
SLIDE 19
28.04.2016 Linuxwochen Wien
MC #2: Must share upstream
Upstream developer maintain You
FLOSS program Binary Source
</>
get
FLOSS program v2 Binary Source
</>
modify
source rights
SLIDE 20
28.04.2016 Linuxwochen Wien
MC #2: Must share upstream
Upstream developer maintain You
FLOSS program Binary Source
</>
get
FLOSS program v2 Binary Source
</>
modify
source rights
Right to private modifications
SLIDE 21
28.04.2016 Linuxwochen Wien
MC #2: Must share upstream
Upstream developer maintain You
FLOSS program Binary Source
</>
get
FLOSS program v2 Binary Source
</>
share SO else modify
source rights
Right to chose who you share with
source rights
SLIDE 22
28.04.2016 Linuxwochen Wien
MC #2.5: Must share with “The Community”
Upstream developer maintain You
FLOSS program Binary Source
</>
get
FLOSS program v2 Binary Source
</>
must publish modify
source rights
SLIDE 23
28.04.2016 Linuxwochen Wien
MC #2.5: Must share with “The Community”
Upstream developer maintain You
FLOSS program Binary Source
</>
get
FLOSS program v2 Binary Source
</>
must publish modify
Right to private modifications
source rights
SLIDE 24
28.04.2016 Linuxwochen Wien
BUT: Rights go downstream
Upstream developer maintain You
FLOSS program Binary Source</>
get
FLOSS program v2 Binary Source</>
share SO else modify
FLOSS program v2 Binary Source</>
share source rights source rights source rights source rights
SLIDE 25
28.04.2016 Linuxwochen Wien
Network service: GPL
You
FLOSS program Binary Source
</>
get SO else run on use
source rights
source rights
SLIDE 26
28.04.2016 Linuxwochen Wien
Network service: AGPL
You
FLOSS program Binary Source
</>
get SO else run on use get
source rights source rights
SLIDE 27
28.04.2016 Linuxwochen Wien
Why use copyleft over non-copyleft FLOSS?
You
Awesome tool Binary Source
</>
share develop
source rights
SLIDE 28
28.04.2016 Linuxwochen Wien
Why use copyleft over non-copyleft FLOSS?
You
Awesome tool Binary Source
</>
share develop build awesome community
SLIDE 29
28.04.2016 Linuxwochen Wien
Why use copyleft over non-copyleft FLOSS?
You
Awesome tool Binary Source
</>
share develop build awesome community
Awesome tool nonfree Binary
(evil) competitor take improve
source rights
source rightssource rights
SLIDE 30
28.04.2016 Linuxwochen Wien
Copyleft = level playing field
Awesome tool Binary Source
</>
share build awesome community (evil) competitor take improve
Awesome tool v2 Binary Source
</>
You develop
source rights
SLIDE 31
28.04.2016 Linuxwochen Wien
Why use copyleft? (2)
Awesome product Binary Source
</>
You develop Customer pay buy source rights
SLIDE 32
28.04.2016 Linuxwochen Wien
Why use copyleft? (2)
Awesome product Binary Source
</>
You develop Customer pay evil competitor
Hey customer, give us </> we run it for you, less €, but no FLOSS!
buy
Sure, why not…
source rights
SLIDE 33
28.04.2016 Linuxwochen Wien
Why use copyleft? (2)
Awesome product v2 Binary
You Customer (evil) competitor use
NOOOOOOES!
source rights
source rights
SLIDE 34
28.04.2016 Linuxwochen Wien
Copyleft = healthy competition
Awesome product Binary Source
</>
pay You develop Customer (evil) competitor
Hey customer, give us </> we run it for you, less €, but no FLOSS!
buy
Well, actually…
source rights
SLIDE 35
28.04.2016 Linuxwochen Wien
Copyleft = healthy competition
You Customer (evil) competitor use
Well… Awesome product v2 Binary Source
</>
source rights
SLIDE 36
28.04.2016 Linuxwochen Wien
Copyleft = healthy competition
You Customer (evil) competitor come back
Of course I am! Awesome product v2 Binary Source
</>
Actually, original dev was way better! NOOOOOOES!
source rights source rights
SLIDE 37
Thank you
CC-BY-SA 4.0 – get in touch to reuse
Please provide feedback to lfodh@fsfe.org