GetItPackages was contents all stuff (commercial) for legit customer license of RAD Studio 10.3 Rio that can be directly get from IDE but unfortunately non-legit users can't get it. So, i provide those official direct links for non-legit user of RAD Studio 10.3 Rio to enjoy it:

PDF Library (Winsoft) 1.4
PDF Library for Android (Winsoft) 1.5
Portable (Winsoft) 1.4
Printing Library for Android (Winsoft) 2.5
SVG Canvas (Winsoft) 1.2
SVG Canvas for FireMonkey (Winsoft) 1.2
TypeLib Import (Winsoft) 1.0
USB library for Android (Winsoft) 1.7
Utils library (Winsoft) 1.6
XML library (Winsoft) 1.3
Zip for Android (Winsoft) 1.9

FoxBurner SDK is a premier CD, DVD and Blu-ray burning and recording software development kit. FoxBurner SDK is cross-platform, and offers a well-rounded and flexible API for fast and easy implementation of different burning and recording solutions. The FoxBurner SDK is the first choice of the leading cloud data centers world wide. If you are looking for burning or recording SDK to be added in your application, you are at the right place. Since 2000 we offer with the FoxBurner SDK a wide API to C++ (MSVC, QT, Eclipse, GCC) as well as an Delphi API and an API to the new FireMonkey framework for Windows and Mac. Today the FoxBurner SDK powers many applications within the health, goverment, law enforcement, data security and other industries.

Winsoft Component Package - complete set of components and libraries
ADO Component Suite
Adonis Component Suite
ADOX Component Suite
Audio Component Suite
Audio Component Suite for FireMonkey
Authentication for Android
Authentication for iOS
Authentication for macOS
Barcode
Barcode for FireMonkey
Bluetooth Library for Android

FirePower X brings a host of new capabilities to existing components, integration with new functionality in RAD Studio 10.4, and a new featured component in the TwwTreeView. This version also supports RAD Studio 10.4.

FlexCel for VCL / FireMonkey is a suite of Delphi components allowing to manipulate Excel files. It includes an extensive API allowing to natively read/write Excel files. If you need to read or create complex spreadsheets, on Windows or macOS on machines without Excel installed, Flexcel can do the job.
Support for cross platform use: Win32, Win64, macOS, iOS, Android and Linux
100% Native support for creating Excel .XLS, .XLSX, .XLSM file formats (Excel 97 - Excel 2019)
100% Native support for reading Excel 2 - Excel 2019 files
100% Native PDF report generation from .XLS/.XLSX files (PDF/A 1, 2 and 3 support)
100% Native support for previewing and printing .XLS/.XLSX files
Fully standards compliant HTML 5 file generation from .XLS/.XLSX files

Delphi and C++ Builder component to host web content in your applications.
uses Microsoft WebView2 API
requires Microsoft Edge (Chromium) version 85.0.538.0 or higher
supports Delphi/C++ Builder XE4 - 10.4
source code included in registered version
royalty free distribution in applications

FirePower X brings a host of new capabilities to existing components, integration with new functionality in RAD Studio 10.4, and a new featured component in the TwwTreeView. This version also supports RAD Studio 10.4.

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 - 10.4 FireMonkey applications
Supports Windows 32/64-bit
Source code included in registered version
Royalty free distribution in applications

Delphi and C++ Builder communication components. Protocols 3964 and 3964R are implemented.

Features:

Available for Delphi/C++ Builder XE2 - 10.4
Source code included in registered version
Royalty free distribution in applications

Delphi and C++ Builder components to enable applications interact with FTP, and HTTP/HTTPS protocols to access Internet resources.
FTP, HTTP and HTTPS protocols supported
well suited for accessing REST services
uses standard Windows WinINet API
available for Delphi/C++ Builder XE2 - 10.4
source code included in registered version
royalty free distribution