Free software movement
Free software is software that is made available under a license that grants the user specific rights that are not typically granted for proprietary software, which include:
- Run the program for any purpose
- Study how the software works and modify it to meet your needs
- Distribute copies of the software
- Publish modifications to the software
In order to fulfill these requirements access to the source code is essential, so free software is a type of open source software. The right to distribute the software may be subject to a clause that ensures that future recipients of the software have the same freedoms.