The Open Source Initiative's definition of Open Source Software is any software which allows the user to:

• Read the code
• Modify the code
• Use the software regardless of race, creed, culture, or geographic location
• Use the code for whatever purpose the user desires
• Redistribute your changes to the code
• Separate parts of the code from the package it is distributed under
• Distribute the software in whatever manner they wish
• Distribute any other software the user wants with the code