Insearch and MarkSystems are products offered by ECI Software Solutions, While Insearch is integrated with MarkSystems, you do not have to be a MarkSystems customer to use Insearch. Insearch is designed to be a standalone product, that can be used by any business that offers options or selections to their customers, such as home builders, and real estate developers. The Insearch integration with MarkSystems is second to none. Not only does Insearch pull all relevant data to display accurately to the buyer, but Insearch can also push buyer selection directly back into MarkSystems which appends, for example, addendums, POs, and work orders.