Delphi and C++ Builder components you can use
to add messaging functionality to your applications.

uses standard Windows SimpleMAPI API
compatible with MS Outlook, Outlook Express, Mozilla Thunderbird and other email clients
available for Delphi/C++ Builder 5 - 10.3 and Lazarus 2.0
source code included in registered version
distributing components in applications is royalty free

Use OCR.NET component to retrieve text from image, for example from scanned paper document.
uses Tesseract OCR engine and Leptonica image processing library
available for .NET 4.0 - 4.8
source code included in registered version
royalty free distribution in applications

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

Components for viewing, navigating, text extracting and editing PDF files.
uses PDFium open-source PDF rendering engine
available for .NET 4.0 - 4.7
source code included in registered version
royalty free distribution in applications

uses ZBar bar code reader library

supports EAN-13/UPC-A, EAN-8, UPC-E, Code 39, Code 93, Code 128, Codabar, PDF417, GS1 DataBar, GS1 DataBar Expanded, Interleaved 2 of 5 and QR Code barcodes
available for .NET 2 - 4.7
source code included in registered version
royalty free distribution in applications

Optical character recognition library for Android. Use OCR.NET for Android to retrieve text from images.

uses Tesseract OCR engine and Leptonica image processing library
supports Android armeabi-v7a devices
source code included in registered version
royalty free distribution in applications

Delphi and C++ Builder utilities library.]

available for Delphi/C++ Builder 7 - 10.3 and Lazarus 2.0
source code included in registered version
royalty free distribution in applications

Delphi library to communicate with attached media and storage devices. Applications can explore devices, send and receive content, and even control devices.

uses standard Windows Portable Devices API
supports Media Transport Protocol (MTP) and Mass Storage Class (MSC) devices
supports Windows 32 and Windows 64
available for Delphi/C++ Builder 5 - 10.3
source code included in registered version
distributing library in applications is royalty free

Delphi and C++ Builder components for accessing MS Access databases
using DAO 3.5, DAO 3.6 (Data Access Objects) and ACEDAO. Provides fast,
native access to data without the need of BDE (Borland Database Engine).

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