Freeware: Software that is available for use at no monetary cost, typically distributed with a license that allows users to download, install, and utilize the software without any payment. Freeware may be proprietary, with the source code not available for modification or redistribution by users. It is often supported by voluntary donations, advertisements, or as a strategy to entice users to purchase a more capable paid version. Unlike open-source software, the rights to copy, modify, and redistribute freeware are usually restricted by the developer. Popular examples of freeware include Adobe Reader and Skype.