“Free” refers to something that does not require payment, cost or fee. It can be used to describe products, services, software, or any other offerings that are available without any monetary obligation. Free products or services can be ad-supported or provided as a trial or demo version before requiring payment. The concept of free is often used as a marketing tactic to attract customers or increase brand awareness. It can also refer to freedom, rights, or liberties that are granted or exercised without any restrictions or limitations.