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.

LinqConnect is a fast, lightweight, and easy to use LINQ to SQL compatible ORM solution, supporting SQL Server, Oracle, MySQL, PostgreSQL, and SQLite. It allows you to use efficient and powerful data access for your .NET Framework, Metro, Silverlight, or Windows Phone applications supporting Code-First, Model-First, Database-First or mixed approaches.

LinqConnect is a fast, lightweight, and easy to use LINQ to SQL compatible ORM solution, supporting SQL Server, Oracle, MySQL, PostgreSQL, and SQLite. It allows you to use efficient and powerful data access for your .NET Framework, Metro, Silverlight, or Windows Phone applications supporting Code-First, Model-First, Database-First or mixed approaches.

The TatukGIS Developer Kernel (DK) is a powerful GIS component (SDK) for custom developing stand-alone, client-server, web server, embedded, and mobile applications. It is ideal for adding GIS functionality to already existing products, porting software applications from less attractive GIS platforms, and developing new applications from scratch. DK product editions are available for multiple development platforms:

Microsoft .NET for WinForms and WPF
Microsoft ActiveX/OCX
Microsoft ASP.NET (for web solutions)
Microsoft .NET Compact Framework (for mobile solutions)
Embarcadero Delphi/C++Builder VCL

The TatukGIS Developer Kernel (DK) is a powerful GIS component (SDK) for custom developing stand-alone, client-server, web server, embedded, and mobile applications. It is ideal for adding GIS functionality to already existing products, porting software applications from less attractive GIS platforms, and developing new applications from scratch. DK product editions are available for multiple development platforms:

Microsoft .NET for WinForms and WPF
Microsoft ActiveX/OCX
Microsoft ASP.NET (for web solutions)
Microsoft .NET Compact Framework (for mobile solutions)
Embarcadero Delphi/C++Builder VCL

Stimulsoft Ultimate is a universal set of tools for creating reports and dashboards. The product includes a complete set of tools for WinForms, ASP.NET, .NET Core, jаvascript, WPF, PHP, Java, and other environments. We provide easy-to-use and, at the same time, fully functional designer. You may create reports and dashboards for any of the supported platforms. Special wizards and editors will help you to cope with any task easily.

The TatukGIS Developer Kernel (DK) is a powerful GIS component (SDK) for custom developing stand-alone, client-server, web server, embedded, and mobile applications. It is ideal for adding GIS functionality to already existing products, porting software applications from less attractive GIS platforms, and developing new applications from scratch. DK product editions are available for multiple development platforms:

Microsoft .NET for WinForms and WPF
Microsoft ActiveX/OCX
Microsoft ASP.NET (for web solutions)
Microsoft .NET Compact Framework (for mobile solutions)
Embarcadero Delphi/C++Builder VCL

The TatukGIS Developer Kernel (DK) is a powerful GIS component (SDK) for custom developing stand-alone, client-server, web server, embedded, and mobile applications. It is ideal for adding GIS functionality to already existing products, porting software applications from less attractive GIS platforms, and developing new applications from scratch. DK product editions are available for multiple development platforms:

Microsoft .NET for WinForms and WPF
Microsoft ActiveX/OCX
Microsoft ASP.NET (for web solutions)
Microsoft .NET Compact Framework (for mobile solutions)
Embarcadero Delphi/C++Builder VCL

Build fully-integrated solutions for retrieving live financial data from banks, credit card, and investment companies. E-Banking Integrator is a powerful suite of components for Open Financial Exchange (OFX) client integration.

Stimulsoft Ultimate is a universal set of tools for creating reports and dashboards. The product includes a complete set of tools for WinForms, ASP.NET, .NET Core, jаvascript, WPF, PHP, Java, and other environments. We provide easy-to-use and, at the same time, fully functional designer. You may create reports and dashboards for any of the supported platforms. Special wizards and editors will help you to cope with any task easily.