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Free Software


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Free Software

  2. 2. OPEN SOURCE <ul><li>1998. </li></ul><ul><li>Netscape Navigator. </li></ul><ul><li>Adapt the idea of Free Software to commercial use. </li></ul>
  3. 3. “ Open Source Definition” Redistribution Source Code Derived Works Integrity No Discrimination Persons Fields of Endeavor License Distribution Not Specific to a Product Not Restrict Other Software Technology-Neutral
  4. 4. VS
  5. 5. PUBLIC DOMAIN <ul><li>No Copyright. </li></ul><ul><li>Public Domain ≠ Public Source Code. </li></ul>
  6. 6. COPYLEFT <ul><li>License of the FSF. </li></ul><ul><li>Free Copies. </li></ul><ul><li>Avoid uncooperative people to cheat. </li></ul>
  7. 7. PROPRIETARY <ul><li>Use </li></ul><ul><li>Redistribution </li></ul><ul><li>Modification Agreement of the proprietary </li></ul>BANISHED
  8. 8. FREEWARE <ul><li>Redistribution Allowed </li></ul><ul><li>Modification Not permitted </li></ul><ul><li>Source code unavailable </li></ul>
  9. 9. SHAREWARE <ul><li>Pay for the software </li></ul><ul><li>Shareware version Less functionality </li></ul>
  10. 10. COMMERCIAL <ul><li>Monetary profit. </li></ul><ul><li>Commercial software ≠ Proprietary software </li></ul>