One of the jetbrain IntelliJ IDEs, Rider is primarily used and built for DOTNET development, and can be used cross platform (Windows, Linux & MacOS) which makes it especially useful for me as I dual boot and my laptop uses only Linux. There is also a plugin to provide better support for developing AvaloniaUI applications, which is immensely useful.
VS Code is a (relatively) lightweight code editor and has many, many use cases. It supports quite a few languages out of the box, and there are many extensions to support more languages, or improve said support. The extension ecosystem is a big draw to VS Code, and one of the main reason I use it. I use VS Code primarily for light code editing, and as a bit of a swiss army knife for developing.
As a matter of fact, I develop this website mostly using VS Code! This extension provides a live preview of HTML files, which proves very useful!
Visual Studio is a IDE primarily used for DOTNET development, like Rider. While it unfortunately only supports Windows, it is a very well made IDE with lots of support behind it.
Godot is a free and open course game engine. It's been in development for many years, and has become a reliable choice for game development (and can even be used for GUI development!)
Windows Terminal is a terminal emulator for Windows that's a bit more advanced than the built in Windows terminal emulators, and I primarily use it because it has a more modern design, and a lot of customizability.
Markdown (.md) is a markup language that is widely used for many apps and services. Chances are, you might have used a markdown based editor before, and might not have even realised it! Discord, Reddit and Tumblr all have markdown options when editing. README files are also often written with Markdown.
Markdown excels at taking notes, which makes it a great choice for managing projects.