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Serial Port Control is an inexpensive royalty-free component. It supports VB, VB.Net, C#, Borland Delphi, Borland Builder. Just put it on a form and you've got all the functionality you need to access an RS232 port.

Virtual Serial Ports Driver for Windows CE creates two pure virtual serial ports in your system which are virtually connected to each other. For other Windows applications they are seen exactly as two real serial ports with null-modem connection.

TracePlus/Ethernet is a powerful network monitoring, performance tool supporting 10-1000 MB/s Ethernet networks. 32 and 64 bit drivers are compatible with all Windows platforms. Supports IPv6, ICMPv6, and VLAN features of the 802.1Q/802.1P protocols.

This is the first software of its kind which includes both local and network virtual COM port functions. It can share your real COM ports or create virtual COM ports and connect them with a virtual null-modem cable locally or through the network.

VSPD All-in-one is a professional solution for programmers. OEM license grants you the power of 3 products – Virtual Serial Ports Driver XP, Virtual Serial Port ActiveX Control and Serial Splitter to create and fully control virtual serial ports.

See which ports belong to which programs! Port Explorer shows all the open ports on your system and what programs own them. Along with this ability it also has many tools including a packet sniffer, bandwidth throttling and country detection.

HW VSP is a free unlimited virtual serial port driver for Win2000 and XP, redirecting all data from the virtual COM5 (for example) to a predefined IP address. The RFC2217 standards for remote RS232 serial port control are supported.