Stockpile is and will forever be free to use. Unlimited users, locations, items, etc. We will be building customer management modules, barcode scanning and the like in the future. Those items, which are outside of Stockpile and will be branded separately, would most like be made available for purchase at a nominal rate. At some point, we may also include advertising within Stockpile to cover the cost of supporting the system.
All that being said, Stockpile inventory management is and will always be free to use as stated.