What is eM Client written in?

Just curious. I’m a programmer and someone recently mentioned they thought eM Client is written in Delphi (that would be really cool!).

Is it?

According to Wiki link below its written in C# .

https://en.wikipedia.org/wiki/EM_Client

Thanks for the quick reply and the link.

Related, I’d be interested in hearing what cross-platform UI solutions eM Client uses. I can tell from just the macOS app that it’s likely some library is used vs. natively coded for each platform. Are well-known publics ones like Avalonia or .NET MAUI used, or something homegrown? Something different for desktop vs mobile or the same solution?