There are 2 repositories under natvis topic.
C++ Debugger Visualizers
Custom views of various objects for Visual Studio debugger
MSVS debug visualisation
dlang pretty printers for GDB & LLDB for various standard types
Natvis implementation for GDB debugger
Python GDB pretty printer using Natvis files for formatting
A metabuild / build.rs compatible crate to embed .natvis debug visualizer files into your executable's .pdbs, for ease of debugging.
Natvis file for suitable visualization of content of Boost Multi Index Container
natvis visualisation of InDesign SDK for Microsoft Visual Studio 201*
visual studio visualizer for Eigen::Tensor<...>
Pretty printer for project Kerbal
Debug-friendly rust types/codes for windows results