SocketTools Secure Library Edition   
http://www.catalyst.com

The SocketTools Secure Library Edition includes standard Windows dynamic link libraries (DLLs) which can be used in a wide variety of programming languages such as Visual Studio.NET, Visual C++, Visual Basic and Delphi. The SocketTools Library Edition API has over 800 functions which can be used to develop applications that meet a wide range of needs. SocketTools covers it all, including uploading and downloading files, sending and retrieving email, remote command execution, terminal emulation, and much more. The SocketTools Secure Library Edition also includes support for the industry standard Secure Sockets Layer (SSL) and Transport Security Layer (TLS) protocols which are used to ensure that data exchanged between the local system and a remote host is secure and encrypted. Your data is protected by industrial strength 128-bit encryption, with full support for client certificates. Using the popular SocketWrench library that is part of SocketTools, you can also write your own, custom secure server applications. And there's no need for you to understand the details of certificate management, data encryption or how the security protocols work. All it takes is a few lines of code to enable the security features, and SocketTools handles the rest! The following protocols are supported by the SocketTools Secure Library Edition: Domain Name Service (DNS), File Encoding and Compression, File Transfer Protocol (FTPS), Finger Protocol, Gopher Protocol, Hypertext Transfer Protocol (HTTPS), Internet Control Message Protocol (ICMP), Internet Message Access Protocol (IMAPS), Multipurpose Internet Mail Extensions (MIME), Network News Transfer Protocol (NNTPS), Network Time Protocol, Post Office Protocol (POP3S), Remote Access Services (RAS), Remote Command Protocol, Simple Mail Transfer Protocol (SMTPS), Terminal Emulation, Telnet Protocol, Whois Porotocol, Windows Sockets (SocketWrench).

Advanced Mailbox Password Recovery   
http://www.elcomsoft.com

A program to recover login and password information (stored locally) for most populat email clients: Microsoft Internet Mail And News, Eudora, TheBat!, Netscape Navigator/Communicator Mail, Pegasus mail, Calypso mail, FoxMail, Phoenix Mail, IncrediMail, @nyMail, QuickMail Pro, MailThem, Opera mail, Kaufman Mail Warrior. Also includes POP3 server emulator that allows to get POP3 password from ANY email client. Passwords are recovered instanly, multilingual ones are supported.

Secur-e-mail for Windows   
http://www.acmetoolz.com

Secur-e-mail will encrypt the communication between your e-mail client (e.g. Outlook) and the POP3 server using an SSH connection. No server-side installation is needed. The software runs on a Windows system tray. It will enable a local POP3 server on your computer, which will allow you to setup your e-mail client to pick up e-mail locally. Other users (hackers) cannot read your username / password across the LAN or the Internet. Suggested for users that pick up their e-mail very frequently (e.g. every 15 minutes or less). Otherwise, their mail, login and password is being exposed to any users on the LAN or across the Net every n minutes (n being the interval of e-mail retrieval). Shareware version can be unlocked with a product key. Updated versions can be unlocked with the same product key (lifetime updates for free).

MailBee POP3   
http://www.afterlogic.com

MailBee POP3 is a powerful and easy to use COM object which enables ASP and Windows applications to receive, parse and delete mail from POP3 servers. Secure authentication, HTML mails, smart and fast MIME parser, email safety, and much more. Can be used in conjunction with SSL, SMIME, SMTP and MessageCensor components. Royalty-free distribution.

MailBee SSL/SMIME   
http://www.afterlogic.com

MailBee SSL component is a plugin which enables MailBee Objects (SMTP, POP3 and IMAP4) to communicate to mail servers over secure connections and process S/MIME mails (encrypt/decrypt/verify/sign/etc). Supports client and server certificates, digital signatures, custom stores, STARTTLS mode, and more. Requires just a few lines of code to completely turn existing application into secure one. Can be used to communicate with Gmail Secure/POP3 and Secure/SMTP service. Royalty-free distribution.