https://github.com/mellinoe/ImGui.NET
This is a .NET wrapper for the immediate mode GUI library, Dear ImGui. ImGui.NET lets you build graphical interfaces using a simple immediate-mode style. ImGui.NET is a .NET Standard library, and can be used on all major .NET runtimes and operating systems.
https://github.com/Sewer56/DearImguiSharp
DearImguiSharp is a minimalistic personal use .NET wrapper for the immediate mode GUI library, Dear ImGui
https://github.com/ocornut/imgui
Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
https://github.com/cimgui/cimgui
This is a thin c-api wrapper for the excellent C++ intermediate gui imgui. This library is intended as a intermediate layer to be able to use imgui from other languages that can interface with C .