Net Send Lite
Net Send Lite is a small utility that uses the existing Microsoft Messaging Service to send network messages. With Net Send Lite you can send messages to a specific username or computer name on your network. Just create a usernames. txt file within the same directory as our software, then select... Net Send Lite is completely FREE, download and see for yourself what Net Send Lite can do. ... Net Send Lite includes the option to save the last user, clear the message after sending and set the ENTER key to send the message by default.
http://www.rjlsoftware.com/download/exe/netsend_setup.exe - 4Mb - Download - Screenshot

Fomine Net Send GUI
Net Send GUI is plain instant LAN messenger for easy communication. It uses proprietary network protocol which one is based on TCP/IP, and it is not compatible with Microsoft NET SEND. But the Net Send GUI fully compatible with Winpopup LAN Messenger, OfficePopup and etc. ... The list of contacts is formed automatically when the Net Send GUI is launched and you can refresh it any time if you press Refresh button. ... The top one is the list of contacts and the bottom one is the message field. ... Program's window contains two parts.
http://www.fomine.com/products/netsend22.exe - 209Kb - Download - Screenshot

Group Net Send
Group Net Send is a small command line utility that send messages to multiple users or groups of users. Our utliity uses the existing Microsoft Messaging Service to send a network message to the specified list of computers. With Group Net Send you can send messages to any username or computer... Group Net Send is perfect for triggering messages based on network events or when machines are rebooted. ... You can even net send large files with the -S command line option, this allows messages that are too large to be split into multiple messages.
http://www.rjlsoftware.com/download/netsendcmd.zip - 169Kb - Download - Screenshot

Net-Send command
Small console utility that can be used to send the messages from an command line, like Net send command in the Windows NT, Windows 2000, Windows XP and Windows 2003 Server. But our utility Netsend. exe works in all Windows versions. NetSend is Winpopup and Net send command compatible.
http://www.cezeo.com/downloads/netsend.exe - 329Kb - Download - Screenshot

QuickMessenger
QuickMessenger is a utility designed to send and receive messages from one computer to another one or a group of computers via the local area network (LAN) under Windows NT, Windows 2000, Windows XP and Windows Server 2003. It uses the Windows 'NET SEND' command, you can thus send messages to... QuickMessenger can also capture messages received by the 'NET SEND' command (Messenger Service Window) in order to display incoming messages and you can then reply to your sender.
http://pages.videotron.com/mmoose/download/qmsetup.exe - 3Mb - Download - Screenshot

MSG
MSG is a program for sending NetBIOS, or more commonly known as "Net Send" messages from a graphical interface. In addition to being a lot easier to use than the command-line based "Net Send" in Windows, MSG allows you to do a lot of things that "Net Send" can't. ... If you install the optional MSGProxyService component on a web server running IIS, you can also send to computers on the workgroup / domain local to the web server from a remote location. ... Features include the ability to search your workgroup or domain for available computers, the ability to send to entire workgroups or...
http://nighteffect.com/files/MSG_2.0/MSG_2.0_Setup.exe - 305Kb - Download - Screenshot

Chilkat Email.NET - Send Email with ASP.NET
A POP3 / SMTP email . NET component for sending and receiving email. Packed with advanced features including: full S/MIME capability for sending and receiving signed and encrypted email, MHTML for sending HTML email with embedded images and style sheets, multipart/alternative,... NET, ASP. ... Works with C#, VB.
http://www.emailcomponent.com/ChilkatDotNet.msi - 2Mb - Download

Chilkat Mail.NET - Send Email with C#
A POP3 / SMTP email . NET component for sending and receiving email. Packed with advanced features including: full S/MIME capability for sending and receiving signed and encrypted email, MHTML for sending HTML email with embedded images and style sheets, multipart/alternative,... NET, ASP. ... Works with C#, VB.
http://www.emailcomponent.com/ChilkatDotNet.msi - 2Mb - Download

absoluteTools-SendMail
AbsoluteTools-SendMail is a easy to use ActiveX COM Control that enables you to send email from your Windows applications using VB, VC++, Delphi or any other ActiveX COM aware programming environment. Now with a free . NET component version (same license, no additional charge). ... NET sample projects and online help you'll be able to send your first emails in minutes! ... Send emails to multiple recipients (To, CC, Bcc) either in plain text or HTML, adding any number of attachments and inline images.
http://www.abspdf.com/download/absTools-SendMail.zip - 1Mb - Download - Screenshot

Winpopup NET messenger
You do not need to have Internet connectivity to use this feature. WinPopup NET Messenger is a network messaging program ( LAN CHAT ) for Windows, that will allow you to send LAN messages from one computer to another on the same network. You may send the message to the user name or computer name... This program has no relationship whatsoever to the Internet.
http://www.lantalk.net/downloads/winpopup-net.exe - 2Mb - Download - Screenshot