TCP Re-engineering Tool monitors and analyzes data transmitted between a client and a server via a TCP connection. It focuses on the data stream (software layer), not on the lower level transmission protocol (as packet sniffers do).
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.