Open-source

Code is open to people, frequently under a license outlining what they are able to do, what they are not able to do.

Closed-source

Code is not open to people and under restrictive licenses. Software is often distributed as a license rather than ownership.

Apple v. Franklin made binary files copyrightable.

	User	Developer
For open-source	Community (can help to develop) Modification permitted by license Easier to diagnose bugs	Easier to distribute Can still make financial gain - i.e., offering paid support to companies
Against open-source	Can be poorly supported, community may be unwilling to help Features may be un-refined when distributed/require community knowledge	Indirect financial gain - often through sponsorship Only large projects usually get sponsors May be stressful due to having to having to manage a project thousands may be contributing to