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Free Software and Copyleft

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

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Paolo Melchiorre

June 09, 2007
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  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