EHNT (the Extreme Happy Netflow Tool) is a simple tool for getting information from Cisco's netflow, which can be used for network accounting and capacity planning. It consists of a server which receives netflow version 5 packets from routers, plus a client which presents the data. Multiple clients can be run at the same time to view the data stream in different ways.
EGO is a program to perform molecular dynamics simulations on parallel as well as on sequential computers. Supported parallel machines include the Hitachi SR8000, CRAY-T3E, IBM-SP2, Fujitsu VPP700, Parsytec-CC under PARIX, and inhomogeneous clusters of UNIX workstations under PVM or MPI. EGO also runs sequentially on any decent UNIX workstation, even Windows95/NT PC's (with a GNU-C compiler) can be used.
EFTP is a backwards-compatible server and client which implement an extension to the FTP protocol. The extension provides protocol-level support for directory recursion and compression over a persistent connection. As would be expected, for the extension to be used, the extended client must be connecting to an extended server.