There is a program, but what is it written on and what libraries are used?

Question

User interface

Aurora as a trading platform . There's even its documentation , but not a word "how it's done", and I really liked how the ComboBox, windows, and indeed many components in general behave in general ... It could easily be C #, but obviously not php, but it can be and anything else ... I didn't install Java machines, I didn't ask for anything incriminating either (like python) ... At the same time, it's not a fact that "certain" libraries of which there are quite a lot are not used and windows are drawn differently.
That's actually the problem - to expose how they did it or maybe there is a very similar one, and the authors simply "finished" for themselves, already ready from the source. Help someone with what you can ... Links or names, if you have seen / heard something ...

Answer 1

Recently there was an article from them
https://habr.com/ru/company/utex/blog/443300/
This is WPF + C#, possibly using Telerik