CrossVcl is a set of tools for Delphi developers, which can create VCL applications for macOS and Linux with Embarcadero Delphi.

CrossVcl is VCL emulator ?

CrossVcl not an emulator, it is WinAPI implementation for other platform.

Telerik UI for JSP includes a Model-View-ViewModel (MVVM) framework. It lets you write JSP code to generate widgets that seamlessly integrate with your server-side backend. With MVVM you can manage complex HTML and jаvascript UI with declarative bindings and two-way syncing between views and models. You don't have to manually keep the view and model in sync; the MVVM framework does it for you.

RVMedia is a set of Delphi VCL and Lazarus LCL components having the following functions:

receiving video from different sources: local web cameras, IP cameras, network video streams, computer desktop, local and remote video files;
configuring IP cameras and controlling their rotation;
reading sound from a microphone;
sending and receiving video and audio data via the Internet;
recording audio and video files;
organizing video chats and video conferences (either as directly connected applications or using a client-server model).

ASP.NET Core MVC is a complete rewrite of the .NET framework, delivering exciting changes and expanding the reach of .NET apps. Here's some of whats new:

.NET Core and Visual Studio Code enable you to develop and deploy apps on any OS—Windows, Linux or Mac
Tag Helpers provide easier views creation and UI definition
Nuget, Bower and Gulp package managers and automation tools boost your productivity
Unified MVC and Web API programming model simplifies development

Business platform Xafari is intended for development of powerful business-oriented applications. It uses state of the art flexible platform DevExpress XAF. Xafari Framework is a set of components that extend and complement DevExpress XAF.