New in Firefox 78: DevTools improvements, new regex engine, and abundant web platform updates 

Windows 10 quietly got a built-in network sniffer, how to use

From Fiddler Classic to Fiddler Everywhere 

10 Essential Debugging Tools for C# .NET Development

ASP.NET Core 2.2 returning 500.30 on Azure App Service: a debugging story 

The WebSocket inspector will be released in Firefox 71, but is ready for you to use in Firefox Developer Edition now.

.NET – Tools for working with multithreading and asynchrony – Part 2 

.NET Core Diagnostics Overview 

In this post, I will cover using breakpoints, stepping through your code, setting watch expressions, and applying your fixes in Chrome Developer Tools.