Free Software and Copyleft

-- A talk I gave at Open-L 2007

First national conference on Free Software and Plone for companies, institutions and public administrations.

More info on https://www.paulox.net/2007/06/09/openl-2007

Transcript

1. © Paolo Melchiorre Open-L 2007 Free Software and Copyleft Paolo Melchiorre June 9, 2007 Gabriele d’Annunzio University – Pescara (Italy)
2. © Paolo Melchiorre Free Software • Free Software definition – Essential four freedoms – Source code • Copyleft mechanism – Freedom guarantee – Copyleft inheritance
3. © Paolo Melchiorre The Free Software history • GNU project – Richard Stallman – GPL license • Linux kernel – Linus Torvalds – The complete system
4. © Paolo Melchiorre The Free Software history • GNU/Linux distributions – Debian – Red Hat – Ubuntu • Software companies and Free Software – IBM – Sun Microsystem – Netscape
5. © Paolo Melchiorre Software legal protection • Copyright • Software protection • User licenses • Copyleft © 🄯
6. © Paolo Melchiorre Software types Free Software Copylefted software 🄯 Free-download software Proprietary Software Freeware Shareware Public domain software
7. © Paolo Melchiorre Free Software contributors • Community – Users – Developers – Managers • External actors – Institutions – Companies – Non-profit organizations
8. © Paolo Melchiorre The software cost • Total Cost of Ownership (TCO) – systems adaptation – operating costs – training – services – development costs • Free Software – low initial costs – best and cheapest services
9. © Paolo Melchiorre Business Types • Software distributions – simplicity, assistance • Hardware support – drivers, compilers, software • Services – assistance, maintenance, safety • Documentation – books, magazines, manuals, publications
10. © Paolo Melchiorre Creative works • Free Documentation • Creative Commons – The 5 licenses • Free Music – Jamendo and open formats • Video – Blender and Elephant Dream
11. © Paolo Melchiorre Conclusions • Potential – distribution – development method – economic model • Protection – copyleft • Risks – little knowledge