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

The SocketTools 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 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).

SharePoint Attachements   
http://www.kalmstrom.nu

Outlook can be configured to publish files directly to a SharePoint site instead of sending the file as an attachement. This allows you to make better use of your intranet and your Exchange server. Outlook is good for a lot of things, but not for file transfers. Works with any Frontpage or WebDAV site but of course best with SharePoint document libraries. Free 15 day trial and a low price tag of only 25 US$.