SlavaNap is a Napster-compatible server for Win32 and Linux.
Main features:
- It is very easy to run and administrate.
- No special skills are required to run server.
- You can always see what is happening on your server.
- Server allows file sharing of almost any file type.
- You can link several servers in one network to bring more search results to every user on each server.
- Server interface is multi-lingual. You can change language from menu.

OpenSSH for Windows is a free package that installs a minimal OpenSSH server and client utilities in the Cygwin package without needing the full Cygwin installation. This is similar to the package formerly available from NetworkSimplicity.

The OpenSSH for Windows package provides full SSH/SCP/SFTP support. SSH terminal support provides a familiar Windows Command prompt, while retaining Unix/Cygwin-style paths for SCP and SFTP.

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. Squid has extensive access controls and makes a great server accelerator. It runs on Unix and Windows and is licensed under the GNU GPL.