I'm using GNU Emacs, which is, from my experience, great for open source software and decentralized development. Last year, I found an issue in a package/extension, I could make an experiment by modifying and running its code on the fly. I didn't even need to reload the whole package/extension. So I figured the solution out and submitted a pull request quickly.

TL;DR: Neovim.

Because I feel exceptionally happy today, I'm going to talk about my journey among text editors:

always vim

Emacs (Doom), everything from small notes to big software projects.

I only really use Vim. Mainly because vi is installed on basically every server and distro, so it is what I got used to.

Kate and Neovim.

I feel old, I'm still using vi.

acme from plan9port, emacs, sometimes vi depending on the situation.

linux mint's xed & GNU nano

Neovim

I use Neovim, LiteXL, and VS Codium depending on the project size and needs. no one tool suits all.

Good old vim

You mean there's something other than vim? The hell you say.

CudaText.

vim in terminal
Notepad++ on Windows
VSCode on MacOS

All using Solarized Dark for the color scheme.

"Cream is gVim, but with many features that should make editing easier for Vim beginners"
i will try this out - - rationale :
.1) only 1/3 of "Kate" 's footprint (16MB download, 74MB on HDD ) on xubuntu 20 lts
.2) code folding (collapse and expand) and so many features even before plugins.

just yell at me if this is a huge mistake !

kakoune

I just use geany.

neovim because the plugin ecosystem is vibrant and alive now that they can be built with lua: https://neovimcraft.com

used vim for like twenty years and then switched to nano

I don't really do coding, the bulk of my text editing is from changing values in games. Sublime Text is great for that.

I do not code, so take what I say in that context. I use Geany because it does many things - and a guy who won a coding competition says he uses only Geany. Geany is far lighter than Atom (which is owned now by Microsoft). Geany handles markdown fairly well and I use mostly markdown. But, plan to learn a tiny bit of code. For terminal, i use use nano or something similar called micro. Both nano and micro can open/use markdown (.md) or .txt, and, though they cannot open .rtf, if i use Ranger terminal file manager, they can show the preveiwed contents of an .rtf file, but cannot open it to edit it that way. Geany can open .rtf if it has no graphics - so text only. If there is formatting added, though, it is an ugly sight. I am testing software on a slow HDD in order to have a very light, fast system and Geany does fine on it.

I used Sublime Text for a very long time, but I've been using neovim for a year now and I really like it. ST is an amazing piece of software, but I enjoy working on neovim more. I use IntelliJ from time to time in Java or Kotlin projects because they are simply unparalleled.

Ocasionally I use CherryTree, but normally the inbuild Markdown notepad of the browser

Have been using Emacs for over a decade, and I'm fairly happy with it.

VS Codium is good, I also use a lot of NeoVIM in the terminal.