The Sleepwalker SMTP Proxy Server allows you to easily switch between SMTP servers within all your programs with the click of a button. Users can also host Web sites from their home PC, with a name that they choose. DESKcam is a very small webserver, that publish the actual screenshot to any standard browser. ZPTServerPro is a high performance web server that is easy to configure and use. EzMTS is a free email server, basic version includes C source code.
Advanced version comes as binary only with more features.
ServerDoc can also rotate servers with its internal scheduling. A tool for handling HTTP server logfiles. Extract a certain time range, or reduce the filesize by removing image requests or other not statistically relevant information you don't want to flood your hard disk. Also includes a handy logfile viewer with statistics and filters on day, item and referrer. You can add as many users as you want, and change any anything the user can do.