Open source

• Open source


  Originated in the context of software development to designate a specific approach to creating computer programs
• Open source


  • Can be modified
  • Can be shared
  • Accessible publicity
• The "Open Source Way"

  • Open exchange
  • Collaborative participation
  • Rapid prototyping
  • Transparency
  • Meritocracy – value, quality, an importance
  • Community-oriented development
• Open source software


  • Source code is released under a license
  • May be developed in a collaborative public manner
  • A prominent example of open collaboration
• Copyright holder rights


  • Right to use
  • Right to study
  • Right to change
  • Right to distribute
• History of open source software

  1. Free software before 1980's

  2. In 1969 - ARPANET constructed

  3. Initial Decline of Free Software (late 1960's)

  4. In the early 1970's - AT&T distributed early versions of Unix

  5. In 1974 - Software was not considered copyrightable

  6. In 1983 - Computer vendors and software-only companies imposed legal restrictions

  7. In 1985 - Free Software Foundation invented copyleft

  8. 1980's and 1990's - Informal software sharing continues

  9. In 1989 - The first version of the GNU General Public License was published
• Open source applications


  • Open source office software
  • Open source accounting software
  • Open source operating systems
  • Open source website software
  • Open source browsers and communication applications
  • Open source IT security
  • Images/multimedia
  • Open source development tools
• Apache OpenOffice


  • An open-source office productivity software suite
  • One of the successor projects of OpenOffice.org
  • The designated successor of IBM Lotus Symphony
• Apache OpenOffice Modules


  • Writer
  • Calc
  • Impress
  • Draw
  • Math
  • Base
• Calligra Suite


  • A graphic art and office suite by KDE
  • KDE is an open community of friendly people who want to create a world in which everyone has control over their digital life and enjoys freedom and privacy
• Calligra Suite Components


  • Words
  • Sheets
  • Stage
  • Kexi
  • Plan
  • Brain dump
  • Flow
  • Karbon
  • Krita
  • Author
• LibreOffice


  • A free and open-source office suite
  • Consists of programs for word processing, creating and editing of spreadsheets, slideshows, diagrams and drawings, working with databases, and composing mathematical formulae
• LibreOffice Components


  • Writer
  • Calc
  • Impress
  • Draw
  • Math
  • Base
• Open source accounting software

  • GNUCash
  • Resource Consumption Accounting (RCA) open-source application
  • Odoo
  • Dolibarr
  • KMyMoney (for MAC)
• GNUCash


  • An accounting program that implements a double-entry bookkeeping system
  • Part of the GNU Project, runs on Linux, GNU, OpenBSD, FreeBSD, Solaris, macOS, and other Unix-like platforms as well as Windows OS
• GNUCash Features


  • Double-entry bookkeeping
  • VAT/GST tracking and reporting
  • Scheduled Transactions
  • Multi-Currency Transaction Handling
  • Mortgage and Loan Repayment Assistant
  • Stock/Mutual Fund Portfolios
  • Small Business Accounting Feature
  • Online Stock and Mutual Fund Quotes
  • CSV Import
  • Built-in and custom reports and charts
  • Home Banking Computer Interface support
  • Budget
  • Transaction-Import Matching Support
  • Bank and Credit Card reconciliation
  • SQL Support
  • Check printing
• GNUCash Small Business Accounting Features

  • Invoicing and Credit Notes
  • Accounts Receivable (A/R)
  • Accounts Payable (A/P) including bills due reminders
  • Employee expense voucher
  • Limited Payroll Management through use of A/Receivable and A/Payable accounts
  • Depreciation
  • Mapping to income tax schedules and TXF export for import into tax prep software (US)
  • Setting up tax tables and applying sales tax on invoices
• RCA Open-Source Application (ROSA)

  • An open-source management accounting application that aims to provide decision support information to managers
  • Resource Consumption Accounting (RCA) is a principle-based approach to management accounting that combines German management accounting techniques known as Grenzplankostenrechnung (GPK) with a disciplined form of activity-based costing
• ROSA Features


  • Uses the business intelligence (BI) application called Palo
  • RCA MODELING - cost objects, planning a cost object's output and primary costs, relationships
  • MAINTAINING - resource pools and business processes, Products & primary costs, secondary costs (internal consumption), capacity, rate calculation
  • ANALYSIS OF - product costs, resource pools and business processes, fixed and proportional rates
  • CONFIGURING - importing of master data and planning data values
• Linux OS


  • A family of open source Unix-like operating systems based on the Linux kernel
  • Linux was originally developed for personal computers based on the Intel x86 architecture, but has since been ported to more platforms than any other operating system
  • Linux is one of the most prominent examples of free and open-source software collaboration
• Embedded systems using Linux

  • Routers
  • Automation controls
  • Smart home technologies
  • TV
  • Automobiles (Tesla, Audi, Hyundai rely on linux)
  • Digital video recorders
  • Video game consoles
  • Smartwatches
• Ubuntu OS


  • A Linux distribution that is mostly composed of free and open-source software
  • Three editions: Desktop, Server, Core for internet of things devices and robots
  • Ubuntu's default desktop is GNOME
  • Developed by Canonical, and a community of other developers, under a meritocratic governance model
  • Named after the Nguni philosophy of ubuntu, which Canonical indicates means "humanity to others" with a connotation of "I am what I am because of who we all are"
• Open source website software

  • Apache HTTP Server
  • FileZilla
  • XAMPP
• Apache HTTP Server


  • A free and open-source cross-platform web server software, released under the terms of Apache License 2.0
  • Developed and maintained by an open community of developers under the support of the Apache Software Foundation
  • Supports server-side programming languages such as Perl, Python, TCL, PHP
• Apache HTTP Server features

  • Virtual hosting allows one Apache installation to serve many different websites
  • Configurable error messages
  • DBMS-based authentication databases
  • Content negotiation
  • Supports several GUIs
  • Supports password authentication
  • Digital certificate authentication
• ModSecurity


  • An open source intrusion detection and prevention engine for Web applications
  • A cross platform Web Application Firewall (WAF) engine for Apache, IIS and Ngix
• FileZilla


  • A free software, cross-platform FTP application consisting of FileZilla Client and FileZilla Server
  • FileZilla client is available for Windows, Linux and MacOS. While FileZilla server are available for Windows only
  • Both server and client support FTP and FTPS (FTP over SSL/TLS)
• FileZilla Features


  • Transfer files using FTP and encrypted FTP such as FTPS
  • Support IPv6
  • Bookmarks for easy access to most frequent use
  • Drag and drop to download and upload
  • Speed limits
  • Large file support >4GB
  • Remote administration
  • Permissions system with users and groups
  • IP filters
• XAMPP


  • A free and open-source cross-platform web server solution stack package developed by Apache Friends
  • Consisting mainly of the Apache HTTP Server, MariaDB database, and interpreters for scripts written in the PHP and Perl programming languages
  • Makes transitioning from a local test server to a live server possible
• Open source browser software

  • Chromium
  • Firefox
  • TOR Browser
  • Brave
  • Waterfox
  • GNOME Web
• Chromium


  • Chromium's user interface is minimalist
  • Google uses the Chromium code to make its Chrome browser, which has more features than Chromium
  • Many other browsers are also based on Chromium code, most notably Microsoft Edge and Opera
  • New Chromium versions are released daily, however there is no "stable" Chromium version unlike other web browsers
• Chromium Features


  • Auto-update capability
  • Integrated Adobe Flash Player
  • API keys for some Google services
  • The Widevine digital rights management module
  • Licensed codecs for the popular H.264 video and AAC audio formats
  • Tracking mechanisms for usage and crash reports
• Firefox


  A free and open-source web browser
• XAMPP makes transitioning from a local test server to a live server possible
• Open source browser software

  • Chromium
  • Firefox
  • TOR Browser
  • Brave
  • Waterfox
  • GNOME Web
• Chromium


  • Chromium's user interface is minimalist
  • Google uses the Chromium code to make its Chrome browser, which has more features than Chromium
  • Many other browsers are also based on Chromium code, most notably Microsoft Edge and Opera
  • New Chromium versions are released daily, however there is no "stable" Chromium version unlike other web browsers
• Chromium features


  • Auto-update capability
  • Integrated Adobe Flash Player
  • API keys for some Google services
  • The Widevine digital rights management module
  • Licensed codecs for the popular H.264 video and AAC audio formats
  • Tracking mechanisms for usage and crash reports
• Firefox


  A free and open-source web browser developed by the Mozilla Foundation
• Firefox


  • Uses the Gecko layout engine to render web pages, which implements current and anticipated web standards
  • Created in 2002 under the codename "Phoenix" by the Mozilla community members who desired a standalone browser
• Open source IT security

  • Advanced Encryption Standard (AES)
  • CrossCrypt
  • IPFilter