S: (n) plug-in, add-on (a software module that extends or enhances the capabilities of an existing application)
S: (n) alpha software (a first release of a software product that is usually tested only by the developers)
S: (n) authoring language (software that can be used to develop interactive computer programs without the technically demanding task of computer programming)
S: (n) beta software (software that has not yet been released but has received an alpha test and still has more bugs than a regular release) "beta software is usually available only to particular users who will test it"
S: (n) shareware (software that is available free of charge; may be distributed for evaluation with a fee requested for additional features or a manual etc.)
S: (n) shrink-wrapped software (software on CD-ROMs that are boxed and shrink-wrapped and sold in stores (implying a widely supported standard platform))
S: (n) spyware (computer software that obtains information from a user's computer without the user's knowledge or consent)
S: (n) malware (malicious software, designed to break into a system)
S: (n) supervisory software (specialized programs that reside permanently in the computer's main memory and control the processing of user's programs)