Free, Open and Libre

María Arias de Reyna (@delawen)

1983: Software free to


Study (See)


Modify (with same four freedoms)

Free Software Foundation 1985

GPL License (1989) ~ Debian Free Software Guidelines

Free as in

free beer Gratis

freedom (of speech) Libre

Free Puppies

(There is no such thing as a free lunch)

1998 OS Definition - Open Source Initiative

Free Redistribution
Source Code
Derived Works
Integrity of The Author's Source Code
No Discrimination Against Persons or Groups
No Discrimination Against Fields of Endeavor
Distribution of License
License Must Not Be Specific to a Product
License Must Not Restrict Other Software
License Must Be Technology-Neutral

2001 Creative Commons






/* -----------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you can do whatever you want with this stuff. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------*/

BSD and MIT?

BSD and MIT can be reused on propietary projects

BSD enforces the non-endorsement of the author over modifications

BSD and MIT can be used on dual-license

2002 Open Access Initiative: Libre and Gratis

Open Source Seed Initiative

Open Data

Open Government

Open Hardware

2004 Open Knowledge Foundation

2008 Wikimedia



Fear of Freedom

Want more info?

Summary of Licenses

Fifty Shades of Open

¿Tenemos tiempo?