Today all the cool languages and runtimes pledge allegiance to UTF-8, including Rust, Go, and Node.js (JavaScript itself prefers UTF-16 for internal encoding). Most code editors, from Visual Studio ...
Excel is still my spreadsheet workhorse, but VS Code handles the awkward file-level jobs I don't want Excel touching.
I'm not a developer, but I was able to use locally-installed AI to create a writing app suited to my needs. Here's how.