What is Free/Open Source Software?

(as cited in iosn.net)

David Wheeler:

"Briefly, OSS/FS programs are programs whose licenses give users the freedom to run the program for any purpose, to study and modify the program, and to redistribute copies of either the original or modified program (without having to pay royalties to previous developers)."

According to the Free Software Foundation, free software is about protecting four user freedoms:

* The freedom to run a program, for any purpose;
* The freedom to study how a program works and adapt it to a person’s needs. Access to the source code is a precondition for this;
* The freedom to redistribute copies so that you can help your neighbour; and
* The freedom to improve a program and release your improvements to the public, so that the whole community benefits. Access to the source code is a precondition for this.