Stunnel

The stunnel program is designed to work as an SSL encryption wrapper between remote client and local (inetd-startable) or remote server. Stunnel can be used to add SSL functionality to commonly used inetd daemons like POP3, POP2 and IMAP servers without any changes in the programs code.... Platforms: *nix

Enhanced TightVNC Viewer package is a project to add some patches to the long neglected Unix TightVNC Viewer. Enhanced TightVNC Viewer also adds a GUI for Windows and Unix that automatically starts up a STUNNEL SSL tunnel for SSL connections to x11vnc (or any other VNC Server also running an SSL... Platforms: *nix

SSVNC is a free and open source package that provides a GUI for Mac OS X that automatically starts up an STUNNEL SSL tunnel for SSL or ssh for SSH connections to x11vnc or any other VNC server. Then it launches the VNC Viewer to use the encrypted tunnel. The provided unix viewer, ssvncviewer,... Platforms: Mac

Gnu-pop3dS provides a modification of gnu-pop3d with dynamic forking incoming clients. Gnu-pop3dS like SEMAPHORE, not SSL. If You need SSL use Gnu-pop3Sd (huge difference). I used Gnu-pop3d, but it has a few failures. So I added some options to it. I added option -D which converts mailpath... Platforms: *nix

sslredir is a simple utility used for redirecting incoming non-SSL connections to outgoing SSL connections. sslredir project is useful for enabling applications such as mail, news, or IRC clients, which do not support SSL, to connect to SSL servers. It also supports connecting to the remote... Platforms: *nix

smtpauth is a authenticating proxy for servers without SMTP AUTH. Use smtpauth and stunnel programs to add SMTP AUTH (PLAIN, LOGIN) support to any SMTP server. Clients can authenticate over SSL port 465 or cleartext port 587, and authentication is fully logged via syslog. Works with JBMail,... Platforms: *nix

tappipe project is a VPN that is very easy to set up and very small. Installation: 1. Load TUN/TAP module if needed: modprobe tun 2. Configure server: - edit server.conf - edit server.sh - start (as root): stunnel server.conf 3. Configure client: - edit client.conf - edit... Platforms: *nix

S-M-S stands for Slackware Mini Server ans is a Linux operating system console based and manageable through webmin interface. Although described as a mini server, have all the features of a powerful server such as apache2, sendmail, spamassassin, clamav, squid, iptables firewall, mysql, cups and... Platforms: *nix

Antispam, antivirus, authenticating SMTP daemon. Integrates with qmail, sendmail, stunnel, etc. It's simple Perl, so you can hack it to suit your needs. Supports RBLs, mx on from, bounce evil phrases, virus scanning... Platforms: Windows, Mac, Linux

Snowbox is a straightforward and easy-to-use POP3 server written in Perl. It can be set up in a couple of minutes and doesn't rely on editing dozens of files scattered around various configuration directories. Despite its simplness it's a full featured POP3 server. See the feature list below. It... Platforms: *nix