Cut down on costly reverse engineering time: decompile obfuscated APKs, examine Java code and
debug closed-source apps in minutes. Our modular back-end, coupled with a powerful UI
front-end for desktop platforms, allow refactoring operation and scripting to automate
complex tasks.

Delphi and C++ Builder component for serial communication for Windows.
communication with devices connected to serial port
easy of use and very powerful
uses multithreading and overlapping for maximum performance
available for Delphi/C++ Builder 5 - 10.3 and Lazarus 1.8.4
source code included in registered version
royalty free distribution in applications

Xamarin Forms is great if you want to develop apps for different mobile platforms. But when it comes to touch gestures, it is still very limited.
For more than a year they only had the TapGestureRecognizer. Although they did add some others lately, they still don't provide all information which you need. Furthermore the API which they use has been copied from iOS and is not what a .NET developer would expect.

TXLSFile is a Delphi library for reading and writing of Microsoft Excel XLS files.
It is based on direct reading and writing of files, and works without OLE Automation with Microsoft Excel.

Visual Assist X dramatically reduces application development time with key new features and improvements to existing features in Visual Studio, allowing you to: Visual Assist increases automation, simplifies navigation and displays vital information as you develop. The features are so well integrated into the IDE that it is difficult to distinguish what Visual Assist X provides and what is built into the IDE. One thing is certain, you like your IDE more when Visual Assist X is installed. Visual Assist X provides assistance for all of the programming languages of Microsoft Visual Studio 2005 and Microsoft Visual Studio .NET, including C/C++, C#, ASP, Visual Basic, Java and HTML. The product also offers assistance for C/C++ users of Microsoft Visual C++ 6.0 and 5.0.

Delphi and C++ Builder barcode component for FireMonkey.
uses Zint Barcode Generator
supports over 50 symbologies including Code 128, Data Matrix, USPS OneCode, EAN-128, UPC/EAN, ITF, QR Code, Code 16k, PDF417, MicroPDF417, LOGMARS, Maxicode, GS1 DataBar, Aztec, Composite Symbols and more
supports Windows 32, Windows 64, macOS, iOS and Android
available for Delphi/C++ Builder XE2 - 10.3
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 5 - 10.2 and Lazarus 1.8.4
Source code included in registered version
Royalty free distribution in applications

Delphi and C++ Builder NFC library for Android.

Uses Android NFC API
Provides reading, writing and formatting NFC tags
Provides Android Beam data transfer
Supports ISO-DEP, NDEF, NFC-A, NFC-B, NFC-F, NFC-V, MIFARE Classic and MIFARE Ultralight tags
Available for Delphi/C++ Builder XE7 - 10.2
Source code included in registered version
Royalty free distribution in applications

Delphi and C++ Builder NFC library for Android.
uses Android NFC API
provides reading, writing and formatting NFC tags
provides Android Beam data transfer
supports ISO-DEP, NDEF, NFC-A, NFC-B, NFC-F, NFC-V, MIFARE Classic and MIFARE Ultralight tags
available for Delphi/C++ Builder XE7 - 10.3
source code included in registered version
royalty free distribution in applications

Delphi and C++ Builder communication components. Protocols 3964 and 3964R are implemented.
available for Delphi/C++ Builder 5 - 10.3 and Lazarus 1.8.4
source code included in registered version
royalty free distribution