What characteristic allows software to be used for free but restricts commercial distribution?

The characteristic that allows software to be used for free but restricts commercial distribution is commonly referred to as freeware. Freeware includes software that is available at no cost to users, allowing them to use it freely without any payment. However, the key aspect of freeware is that it typically comes with licensing agreements that explicitly prohibit any form of redistribution for commercial purposes, meaning users cannot sell the software or use it to generate profit.

This model enables users to access and utilize the software without financial barriers while protecting the developer's rights and ensuring that their product is not exploited for commercial gain. Many software developers choose this model to encourage widespread usage and adoption of their software while controlling how it is distributed and utilized in commercial contexts.

Other terms, such as open access, trial version, and closed source, refer to different licensing and distribution strategies that do not align with the stipulation of allowing free use while restricting commercial distribution in the same manner as freeware does.