As my operating system, I mainly use Arch- and Void GNU/Linux due to the AUR for Arch and XBPS for Void, and since they're both a rolling release and are quite simple for me to use. I am currently using Proxmox VE - which is Debian based - on my server.
My IDE/text editor is Neovim.
As for a browser I use a few different browsers for different usecases. For example for most normie work, I use Firefox. For things where I do actually want a lot of privacy, I use LibreWolf and for testing websites which won't work with the Firefox webkit I use Ungoogled Chromium.
I still use Discord like a normie. Ahwx#9514.
I use i3wm as my window manager on the X window system.
I use the ZSH shell with ohmyz.sh.
For accessing privacy unfriendly services I use my own instances/frontends. (A few more instances are incoming.)
My server is a HPE ProLiant DL380p G8 running Proxmox. This is my main server which is been running for quite some time now. I am always learning about new things to do with it. It has two Xeon E5-2630's, 128GB of RAM and a 300GB boot drive. For storage, I have a RAID array with 2x 256GB SSD's and 3x 2TB HDD.
I am priviledged enough to have both a desktop and a laptop. My desktop is my main workstation, and was built by me with video editing and gaming in mind. It has a watercooled Ryzen 5 5600X, 32GB of RAM and an RTX 2060 Rev. 1. It has one terabyte of NVMe SSD which is plenty for Arch Linux.
My laptop is a Lenovo ThinkPad X280, and it has 512GB of SSD, 16GB of RAM and an Intel Core i5 8350U. It's the best keyboard + TrackPoint combination I've ever had, far better than any of my older laptops, and I got it practically new! (Other laptops are: HP EliteBook 840 G1, Asus K56CA or VivoBook 15.) It only runs open source software except for some programs which I do need sadly.