Trial software is a type of software that is available for free or at a reduced cost for a limited period of time. It usually comes in two forms: demos and betas. Demos are typically fully functional versions of the software that are available for a short period of time, usually a few days or weeks. Betas are usually earlier versions of the software that are released to the public for testing and feedback. They are often available for a longer period of time, sometimes months or even years.