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Free software: How does it work?

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Information about Free software: How does it work?

Published on October 5, 2007

Author: kamaelian

Source: slideshare.net

Description

This talk was the second talk at the EBU's Seminar on Open Source Oct 1st, 2nd 2007. http://www.ebu.ch/en/technical/opensource/
This is an introduction to the concepts behind free software.
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Free software: How does it work? European Broadcasting Union Seminar Geneva, October 1, 2007 Rishab Aiyer Ghosh (ghosh@merit.unu.edu) United Nations University / MERIT, Maastricht (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 1

Software: the object 10101010101111100101001110101010010101011 10001110101010010101011101010101010111110 01000111010101001010101110101010101011111 00101001110101010010101011101010101010111 11001010011101010100101010111010101010101 11110010100111010101001010101110101010101 01111100101001110101010010101011101010101 01011111001010011101010100101010111010101 01010111110010100111010101001010101110101 01010101111100101001110101010010101011101 01010101011111001010011101010100101010111 01010101010111110010100111010101001010101 11010101010101111100101001110101010010111 (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 2

Software: source code // “hello world” program // use standard input-output functions #include <stdio.h> void main () { printf(“hello, world!n”); // print it! } (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 3

Software: functionality hello world! (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 4

Free/Libre/Open Source Software Software which users have freedoms to: Use (the software's functionality) Study (the software source code) Distribute (at any or no price) Change (and distribute changes) (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 5

Free as in Freedom Free software = Libre software = Open source software (different terms for the same software) (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 6

Free as in Freedom Proprietary software = closed source software without the freedom to use, study, share and modify (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 7

Source vs Standards Open standards: easily implemented by any software, without legal, technical, financial barriers (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 8

Source vs Standards Open standards: easily implemented by any software, without legal, technical, financial barriers Other standards (not open!): proprietary standards, or standards which different producers may be prevented from implementing for legal, technical or financial reasons (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 9

Source vs Standards Open source uses open standards (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 10

Source vs Standards Open source uses open standards Proprietary software often uses closed standards (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 11

Source vs Standards Open source uses open standards Proprietary software often uses closed standards Open standards limit vendor lock-in (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 12

Source vs Standards Open source uses open standards Proprietary software often uses closed standards Open standards limit vendor lock-in HTML – any software can read the web SMTP – any software can send email (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 13

Source vs Standards Open source uses open standards Proprietary software often uses closed standards Open standards limit vendor lock-in HTML – any software can read the web SMTP – any software can send email DOC – works best/only with Microsoft (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 14

Source vs Standards Closed standards and broadcasting: Stream only in Windows Media = force your audience to pay Microsoft (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 15

+ + users have control (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 16

+ + users have control + adapt software to your needs (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 17

+ + users have control + adapt software to your needs + no need to change hardware (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 18

+ + users have control + adapt software to your needs + no need to change hardware + decide when and how to change (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 19

+ + users have control + adapt software to your needs + no need to change hardware + decide when and how to change + no forced software upgrades (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 20

+ + users have control + adapt software to your needs + no need to change hardware + decide when and how to change + no forced software upgrades + no vendor lock-in (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 21

+ + users have control + reduce costs (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 22

+ + users have control + reduce costs + in-house support (if skills exist) (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 23

+ + users have control + reduce costs + in-house support (if skills exist) + external support of your choice (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 24

+ + users have control + reduce costs + in-house support (if skills exist) + external support of your choice + adaptable to cheaper hardware (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 25

+ + users have control + reduce costs + in-house support (if skills exist) + external support of your choice + adaptable to cheaper hardware + can reduce running costs (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 26

+ + users have control + reduce costs + open standards (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 27

+ + users have control + reduce costs + open standards + no proprietary standards (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 28

+ + users have control + reduce costs + open standards + no proprietary standards + give your customers choice (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 29

+ + users have control + reduce costs + open standards + no proprietary standards + give your customers choice + increased interoperability (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 30

+ + users have control + reduce costs + open standards + sustainability (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 31

+ + users have control + reduce costs + open standards + sustainability + code forever accessible (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 32

+ + users have control + reduce costs + open standards + sustainability + skills development (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 33

+ + users have control + reduce costs + open standards + sustainability + skills development + #1 reason for developers (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 34

+ + users have control + reduce costs + open standards + sustainability + skills development + #1 reason for developers + FLOSS is a training environment (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 35

+ + users have control + reduce costs + open standards + sustainability + skills development + security and quality (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 36

–/? – smaller installed base (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 37

–/? – smaller installed base – fewer users = less support (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 38

–/? – smaller installed base – fewer users = less support ? but support increasing with users (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 39

–/? – smaller installed base – fewer users = less support ? but support increasing with users + niche areas have a lot of support (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 40

–/? – smaller installed base – compatibility with proprietary apps (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 41

–/? – smaller installed base – compatibility with proprietary apps ? prop vendors want to lock you in (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 42

–/? – smaller installed base – compatibility with proprietary apps – who can i blame? (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 43

–/? – smaller installed base – compatibility with proprietary apps – who can i blame? ? not your proprietary vendor! ? service contracts for liability (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 44

–/? – smaller installed base – compatibility with proprietary apps – who can i blame? – legal issues? ? have you read your prop. licence? (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 45

–/? – smaller installed base – compatibility with proprietary apps – who can i blame? – legal issues? – ease of use (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 46

–/? – smaller installed base – compatibility with proprietary apps – who can i blame? – legal issues? – ease of use – mainly for end-user apps + rapidly improving (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 47

–/? – smaller installed base – compatibility with proprietary apps – who can i blame? – legal issues? – ease of use (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 48

Outlook < 20% of software is bought as a product ● Rest of software – custom, in-house – has ● an economics like open source “FLOSS-related” services could account for ● >30% of IT market by 2010 (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 49

Thank you Rishab Aiyer Ghosh ghosh@merit.unu.edu UNU-MERIT / FLOSS Project European Commission report: www.flossimpact.eu (c) 2007 Rishab Aiyer Ghosh - Licensed under Creative Commons cc-by-sa 50

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