Communication protocols 3964 and 3964R for .NET.
contains ComPort.NET serial communication component
supports .NET Framework 4.x
source code included in registered version
royalty free distribution in applications

Delphi and C++ Builder serial communication library for USB connected devices for Android.

uses usb-serial-for-android library
supports FT232R, CDC/ACM (Arduino Uno), CP2102 and CH34x chips
no special root access privileges needed
available for Delphi/C++ Builder XE6 - 10.3
source code included in registered version
royalty free distribution in applications

Delphi and C++ Builder FireMonkey serial communication component for Windows.

Features:

communication with devices connected to serial port
easy of use and very powerful
uses multithreading and overlapping for maximum performance
supports Delphi/C++ Builder XE2 - 10.3 FireMonkey applications
supports Windows 32/64bit
source code included in registered version
royalty free distribution in applications

VMProtect protects code by executing it on a virtual machine with non-standard architecture that makes it extremely difficult to analyze and crack the software. Besides that, VMProtect generates and verifies serial numbers, limits free upgrades and much more. Serial Numbers. The Ultimate edition of VMProtect allows to add serial numbers to the protected application with minimal efforts. The feature is supported by PayPro Global e-commerce provider, so you even doesnot need to setup your own serial number generator (of course, you can do that if you really need). Licensing feature allows to limit the period of free updates, set the time of life of serial number, prevent the code execution without serial numbers and much more. Any serial number can be blocked and newly protected files will not accept it.

It's a small and very simple in usage dll providing on low level (No WMI, no Registry) access to general hardware informations about a computer and lets you build the ComputerID (or a few IDs as You wish) based on them. The library does its job very fast. Except the graphic card name (from driver) all information are read directly from hardware system.And all of it without administrator privilege. There are informations as follow:
HDDs informations: hdd count, model, serial, revision for all physical drives (not volumes like c, d,.. but physical drives) and additionally: tracks per cylinder, sectors per track, bytes per sector, cylinder count and logical drives created on each physical drive.

Asynchronous serial communications made easy for your Delphi & C++Builder applications. TMS Async is a communications package containing components which provide access to the serial ports under Windows. The event-driven architecture provides the highest possible performance and allows all the tools to run in the background.

Delphi and C++ Builder FireMonkey serial communication component for Windows.

Features:

communication with devices connected to serial port
easy of use and very powerful
uses multithreading and overlapping for maximum performance
supports Delphi/C++ Builder XE2 - 10.2 FireMonkey applications
supports Windows 32/64bit
source code included in registered version
royalty free distribution in applications

Delphi and C++ Builder component for serial communication for macOS.
communication with devices connected to serial port
available for Delphi/C++ Builder XE2 - 10.2
source code included in registered version
royalty free distribution in applications

ZylSerialPort.NET is a thread based, event driven, asynchronous / synchronous serial port .NET class / component. Use ZylSerialPort.NET component to easily communicate with external devices on serial port connection, such as modems, bar code readers, GSM modules and others.

Serial Framework is the Software Developer Kit (SDK) for software developers that provides an easy access to the Serial Ports features on Windows desktop platforms. Serial Framework is the part of Wireless Communication Library but can be used as stand alone library.