Abandonware is defined as any software that is not being sold or supported by the company that produced it, nor by any other company. When a certain piece of abandonware is later found to be sold or supported by a company (for instance in a re-release or a compilation), then it ceases to be abandonware. The term may also apply to hardware that matches this description.
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Warez, Abandonware, and the Software Industry
An article looking at the issues involved in abandonware from both sides, from Brass Lantern.
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