ITEC 65

• Open source


  The term open source refers to something people can modify and share because its design is publicly accessible
• Open source software (OSS)


  A type of computer software in which source code is released under a license in which the copyright holder grants users the rights to use, study, change, and distribute the software to anyone and for any purpose
• History of Open Source Software

  1. Free Software Before 1980's

  2. 1950s - 1960s = Almost all software was produced by academics and corporate researchers working in collaboration, often shared as public-domain software

  3. 1953 = The first example of free and open-source software is believed to be the A-2 system, developed at the UNIVAC division of Remington Rand

  4. 1969 = The Advanced Research Projects Agency Network (ARPANET), a transcontinental, high-speed computer network was constructed

  5. Late 1960s = Initial decline of Free Software

  6. Early 1970s = distributed early versions of Unix at no cost to government

  7. 1980s and 1990s = Informal software sharing continues
• Open Source Office Software

  • Apache OpenOffice
  • Calligra Suite
  • LibreOffice
• Open Source accounting software

  • GnuCash
  • RCA Open-Source Application (ROSA)
• Open source operating systems


  • Linux
  • Ubuntu
• Open source website software

  • Apache
  • FileZilla
  • XAMPP
• Open source browsers and communication applications

  • Chromium
  • Firefox
• Open source IT security

  • AES
  • CrossCrypt
  • IPFilter
• Images/multimedia


  • Blender
  • GIMP
  • OpenShot
• Open source development tools

  • Atom
  • IDLE
  • Dev-C++
• GNU General Public License (GNU GPL or GPL)


  Terms and conditions for the copying, modification and redistribution of open source software
• Versions of the GNU GPL

  1. Version 1 -- GPL v1 (1989)

  2. Version 2 -- GPL v2 (1991)

  3. Version 3 -- GPL v3 (2007)
• LibreOffice


  A freely available, fully-featured office productivity suite with native file format Open Document Format (ODF)
• Components of LibreOffice


  • Writer (word processor)
  • Calc (spreadsheet)
  • Impress (presentations)
  • Draw (vector graphics)
  • Base (database)
  • Math (formula editor)
• Advantages of LibreOffice


  • No licensing fees
  • Open source
  • Cross-platform
  • Extensive language support
  • Consistent user interface
  • Integration
  • Granularity
  • File compatibility
  • No vendor lock-in
  • You have a voice
• Minimum requirements for LibreOffice