YuZip is a Delphi library to create, open, extract from, and modify ZIP archives with multiple algorithms for compression (deflate, bzip2, LZMA, PPMd, XZ, zStandard) and encryption (AES, PKWARE).

CompressionMaster Suite is the most advanced data compression library available for Delphi and C++ Builder. The Suite includes three independent data compression products: Easy Compression Library, FlexCompress and Delphi Zip component ZipForge. Compression Master is a complete solution for developing applications with data compression and encryption capabilities.

Delphi and C++ Builder library for creating, processing and rendering PDF documents.

Features

Uses PdfBox-Android library
Available for Delphi/C++ Builder 10.4 - 12
Royalty free distribution in applications

Delphi and C++ Builder optical barcode recognition library for Android.

uses ZXing library
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 10.4 - 12
source code included in registered version
royalty free distribution in applications

OmniThreadLibrary is a powerful threading library for Delphi. OmniThreadLibrary's main "selling" points (besides the prices, of course ;) are power, simplicity, and openess. With just few lines of code, you can set up multiple threads, send messages between them, process Windows messages and more. OmniThreadLibrary doesn't limit you in any way - if it is not powerfull enough for you, you can ignore any part of its "smartness" and replace it with your own code.

FreeEsVclComponents - a free library of VCL components for Delphi and C++Builder.
There are new controls and components, classes to improve the appearance and to better user experience.
Components has best transparency support, do not flicker.

Cross-framework core layer for creating rich visual and non-visual components.

Features
JSON reading, writing and parsing functionality
Base64 and URL encoding and decoding
Component persistence
Undo/Redo Manager
Verification of numeric, alphanumeric character sets

DIXml is an embedded XML, XSLT, and EXSLT processing library for Delphi (Embarcadero / CodeGear / Borland). It is build on the libxml2, libxslt and libexslt libraries. However, DIXml requires no DLLs or any other external files whatsoever. All required code is compiled completely into the application's executable. DIXml is the most feature-complete XML and XSLT solution for Delphi.