B2B Marketplace / P2P Script Wanted

Looking for a B2B Marketplace /P2P Script. It must be open source, a script you created or a script that you have full rights to. This is for just the right to use the script and installation of the script (customization will discuss later). To win this project you must show me in PMB the script installed working or at least a full description of the script and what it can do. John