Abandonware    
Abandonware is computer software which is no longer being sold or supported by its copyright holder...

  Copyleft    
Copyleft is a play on the word copyright and is the practice of using copyright law to remove restrictions on the distribution...

  Federation Against Software Theft    
The Federation Against Software Theft (FAST) is a UK-based industry-sponsored organization that pursues those who use, copy...

  Free Software Foundation    
The Free Software Foundation (FSF) is a non-profit organization founded in October 1985 by Richard Stallman to support the free...

  Software Copyright    
Software copyright, the relatively recent extension of copyright law to software, has allowed a market for proprietary software to flourish for some time...

Federation Against Software Theft

The Federation Against Software Theft (FAST) is a UK-based industry-sponsored organization that pursues those who use, copy, or distribute software without paying a fee to one of its sponsors. The organization claims that such a fee must be paid on the grounds that the software in question is copyrighted.