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 2 - 4.5
source code included in full version
royalty free distribution in applications

Delphi optical character recognition component for Windows, OS X and Android FireMonkey applications.

Features

Uses Tesseract OCR engine and Leptonica image library
Supports Windows 32, Windows 64, OS X and Android
Available for Delphi/C++ Builder XE2 - 10
Source code included in full version
Royalty free distribution in applications

Delphi and C++ Builder optical character recognition component.

Features

Uses Tesseract OCR engine and Leptonica image library
Supports Delphi/C++ Builder 5 - 10 and Lazarus 1.4.4
Source code included in full version
Royalty free distribution in applications

Delphi and C++ Builder optical barcode recognition component for FireMonkey applications.

Features

Uses ZBar bar code reader library
Supports EAN-13/UPC-A, EAN-8, UPC-E, Code 39, Code 93, Code 128, Codabar, GS1 DataBar, GS1 DataBar Expanded, Interleaved 2 of 5 and QR Code barcodes
Supports Windows 32, Windows 64, OS X, iOS and Android
Available for Delphi/C++ Builder XE2 - 10
Source code included in full version
Royalty free distribution in applications

Delphi optical character recognition component
for Windows, OS X and Android FireMonkey applications.

Delphi optical barcode recognition library for Android.

Uses ZXing library https://github.com/zxing/zxing
Supports UPC-A, UPC-E, EAN-8, EAN-13, Code 39, Code 93,
Code 128, Codabar, ITF, RSS-14, RSS-Expanded, QR Code,
Data Matrix, Aztec and PDF 417 barcodes
Available for Delphi/C++ Builder XE5 - XE8
Source code included in full version
Royalty free distribution in applications