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Free Virtual Serial Ports Emulator

Free - Eterlogic Software
VSPE is intended to help software engineers and developers to create/debug/test applications that use serial ports. It is able to create various virtual devices to transmit/receive data. Unlike regular serial ports, virtual devices have special capabilities: the same device can be opened more than once. Using VSPE you can share physical serial port data between several programs, create virtual pipes and so on.
rs232, port, serial, device, data, testing, com port, stress test, emulator, system, driver, digital
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HW VSP

Free - HW group
HW VSP adds a virtual serial port (COM5) to the system and redirects all
communication over TCP/IP to remote IP address. HW VSP is free in
unlimited version, it supports Windows 2000 and XP. HW VSP works with any
TCP/IP device, it can work as a TCP server as well as a TCP Client.
HW VSP supports remote RS232 port control (speed, parity, stop bits,
etc..) over the RFC2217 (NVT).
rs485, video, analyzer, activity, viewer, modem, traffic, reader, test, sniffer, communication, view
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NCD Device Development Lib

Free - National Control Devices
NCD Devices Development Lib supply powerful ActiveX for all NCD devices.
NCD relay controllers allow computer controlled switching from the RS232 serial port of a microcontroller or computer.
NCD video switchers allow computer controlled multiplexing of audio or vide signals from the RS232 serial port of your computer.
packet, analysis, monitoring, connection, transfer, capture, ports, monitor, analyze, load, stress, sms dll
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ActiveSMS - OCX

Free - Net Sphaera S.n.c.
ActiveSMS is an ActiveX DLL that allows you to fully handle GSM, GPRS, HSCSD and UMTS terminals. Developers can integrate the following features in their application:
Reception and forwarding of text messages
Reception and forwarding of Flash messages.
Multiple forwarding of SMS.
Status report handling.
Voice call handling (both incoming and outgoing).
Reception and forwarding of binary messages.
Handling of phonebooks.
control, switcher, servo, anolog, home automation, relay driver, relay, motor, motion, relay controller, industrial automation, light dimmer
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ActiveSMS - SMS ActiveX

Free - Net Sphaera S.n.c.
ActiveSMS is an ActiveX DLL that allows you to fully handle GSM, GPRS, HSCSD and UMTS terminals. Developers can integrate the following features in their application:
Reception and forwarding of text messages
Reception and forwarding of Flash messages.
Multiple forwarding of SMS.
Status report handling.
Voice call handling (both incoming and outgoing).
Reception and forwarding of binary messages.
Handling of phonebooks.
serial communications, asynch communications, win32 serial, win32 com, tcp ip, emulate, windows, splitter, controller, umts, sms visual c, activex
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HS SMS DLL (GSM 07.05)

Free - Hillstone Software
HsSmsDLL is a Windows DLL enabling applications to send, receive, read and delete SMS messages via a GSM modem attached to COM port, according to GSM 07.05, 03.40. The library includes integrated encryption AES, DES, 3DES, ARC4, CAST128, Blowfish,Twofish optionally applied to SMS text. HsSmsDll is designed for use from Visual C / C++, VB (v6 and 2003), C# .NET and other programming languages. Professional License includes full C source code.
gsm dll, short message system, gsm terminal, gprs ocx, sms vb, gsm ocx, sms server, sms net, sms activex, gprs activex, sms ocx, sms visual basic
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