I have 4. My main and second are 46" each, the 3rd. is a 27" in normal/landscape, and the 4th is a 27" in portrait. The main is in front of me, the 2nd. is to the right and angled toward me, the 3rd. faces me at 90 degrees from the main, and the 4th. Is mounted above the 3rd. I used them originally for streaming and all of the windows I had open to monitor everything at the time as well as the game I was playing. Now I find them useful for working on projects, watching videos or movies while I play a game, and working on multiple spreadsheets at the same time. The one in portrait is especially helpful when I'm looking at a season's worth of a scheduling spreadsheet.

I have three identical monitors in a row. Primarily I use the center one, for productive work and gaming, but often I'll have something up on the second screen that I'm working with as well. It's more rare that I actively use the third one, but some tasks have more than two or three windows and now I can see all of them full size at once.

I've occasionally used them as a single ultra wide screen for gaming, but since then I've gotten an hmd for VR and that is better.

I use multiple monitors for audio production. My use case is a bit weird since I code Csound and use a DAW, which is unconventional. It's great for having the DAW up on the 4k, and some code or docs or both on the 1080p, 144Hz. If you didn't guess from the mixture of resolutions and frame rates, I've got gaming covered as well.

Truthfully, the 4k probably has the real estate to do all that on its own, but it was the last monitor I bought and why not use the other? I'm too lazy to figure out a setup to hook up the other 1080s I have lying around. (And don't need the space in any case)

I have two monitors but I do all my work on one the other is completely separate. Plays YouTube all day so that I have background noise to work with.

Four monitors plus the laptop screen. It’s…a lot visually, but my productivity is significantly higher than when I only had two and the laptop screen.

They’re arranged in a square so clockwise from top right:

1. Work entry screen - this is where I’m typing a lot

2. Reading screen - this is the general source of what I’m working on

3. Outlook - I’m fully remote, Outlook is life

4. File folders - I work mainly with two or three folders all day so it just makes sense to have them uncovered

Laptop - Teams!

Of note, I use a ton of keyboard shortcuts and have generally optimized my workflow so I’m not hitting the mouse nearly as often as my coworkers. Having Outlook and Teams each have their own screen means I can keep them open and see what’s coming in while still working on my stuff on other screens. Final thing I’ll say about the arrangement, because you’re probably visualizing this making for a good gaming setup, no it wouldn’t because of how the screens are placed.

No matter what, get yourself a mirror. I don’t like people suddenly appearing by me, and since I’m using noise-cancelling headphones with music/podcasts 40+ hours a week, this keeps me from jumping out of my skin.

Backend dev. I have an ultrawide (like two monitors in one).

Sometimes I need to test the full stack and need a lot (8+) terminals. I try to tile them all on a separate virtual desktop.

Most commonly though, I center my main application and can have two smaller, peripheral applications, one on each side.

When doing full stack, I need a browser, IDE and two terminals, tiled to give more space for the browser.

Not a computer person; just a worker with an office. I keep my laptop vertical to the right with my email/calendar usually open. I use a monitor left of this - it's big enough that I can comfortably have 2-3 windows on it - so i can have 4 things open at a time. When i have a zoom, meet, or WebEx, that takes one; second is whatever I'm supposed to report in that meeting; third and fourth are what I'm actually working on. My biggest problem is that the vertical laptop has the camera and in some video meeting apps I'm in portrait while everyone else is landscape.

Two screens and a laptop screen, could find use for more. I find myself shuffling things around depending on what I need, but most commonly I have the left screen split between notepad++ on one side for any notes keeping, and either documentation I'm reading, documentation I'm writing, a browser I'm using, or something such. Whenever I need to compare text files, notepad++ gets to take the whole screen.

On the middle screen I usually have the remote desktop or VM I'm working on at the time.

Right (laptop screen) is usually reserved for Outlook and Teams.

I have three. Left for email, right for Teams, middle for whatever I'm working on. Then I cover up Teams and Email (in that order) when I need to see multiple things at once (e.g., a second instance of VS or SSMS or a browser).

On a Mac the Expose features such as ability to customize your screen rather than have to deal with fixed real estate plus additional virtual desktops are also highly notable in that regard. There are definitely advantages of having additional physical screens over the window management approach, but also vice versa too. I would say just try it, but note that it does take quite a bit of getting used to, as too in a sense does multiple monitors especially if trying to use different windows from the same app - browser - on different ones.

Also if cost is no factor at all, instead of multiple monitors you can have large nice screen + laptop, for the ultimate portability. There too there are advantages and disadvantages both - e.g. while working on one the other will fall asleep, if the nice screen is a separate computer rather than mere monitor.

To someone wondering what to try: something will appeal to you - listen to your inner voice and let it guide you! If you are wrong, you still learn from the experience;-).

After having tried most standard configurations at various jobs and home (never a third monitor though, I prefer the ease and simplicity of a single large monitor. Everything is a few keystrokes away but I tend not to need to see all things at the same time. Sometimes, extremely rarely, it does seem too constraining, but not enough to justify the additional cost of a second monitor (not just money but setup and my attention time), and this works well enough for me. Others will similarly do what works best for them in turn.

I have 3 monitors. One I use for email/slack. The others I use for database and backend coding and VMs. I honestly the 3rd monitor is great. Aside from email and slack. I can use it for any additional documentation, requirements, or JIRA. Honestly, 3 monitors is the way to go in my opinion.

I only have 1 ultra wide monitor. It's slightly less screen space than 2 monitors, but it's enough, and I like the simplicity of it.

One additional vertical monitor for e-mail, papers or documentation is great.

Less necessary now that I'm using a tiling wm, but previously it allows me to have IDE, program I'm working on, and a browser for googling without having to switch context to go between them

Plus if more is needed for whatever use case (terminal window for running application, teams, etc) I can split screen too

With a tiling wm at work I have teams/outlook on right, primary application (terminal/tmux, IDE, browser etc) center and googling browser on the left, and then a virtual desktop for each project I'm working on at the home if I need to switch for whatever reason

Primary "workspace", comms, docs/reading/reference data.

My work setup has two monitors in a horizontal layout.

Left (in front of me) contains the main stuff for my task at the moment. That's where my meeting app goes as well so I can look straight at the webcam during meetings.

Right has the supporting stuff, reference docs, IM just in case I need to be pulled away for some critical issue, etc.

At most, I can work with three monitors for increasing productivity in terms of screen real estate. More than that would be a case of diminishing returns for more physical space taken.

I have three. The third doesn't really boost my productivity much, I have it vertical just to show my file browser because I open and switch through different files quite a lot. The other two are to show the actual files I'm working in or comparing.

I have a central monitor in landscape orientation which is where my IDE lives. Then a monitor on the left in portrait, which has the bottom quarter or so dedicated to work chat, music controls, and the browser developer window, then the rest of it is a web browser for documentation. On the right is my laptop screen, which is used for more documentation and watching TV shows while I work

Gaming: I have a game that has tons of third party software that tracks game elements real-time that are far easier to read, contain more information, and more readily understandable than any in-game menu. So play the game on one monitor, have the apps running in windows on the second one.

3D design. Have the work window open for maximum real estate on one monitor, have pop-out menus and tools on the other for things that maybe don’t have hot keys or shortcuts assigned. Also, a small browser window for “how do I” question when I hit a roadblock.

I always have used 2. I use multiple desktops really hard (for a long time in Linux and MacOS, and with third party Windows stuff till they finally caught up) and find it more convenient for compartmentalizing than multiple monitors.

The only times I want to (and occasionally do) go more than 2 is watching F1 with data viewing and so many camera angles up

For work, it's usually IDE on the right (my larger screen) and a live build of the thing I'm working with on the left (a laptop screen). Though it varies a lot throughout the day. Primary screen gets the app that needs most scrutiny, small screen gets auxilliary things like passive communication apps or reference materials.

For home use, where I have two monitors of equal size, it's usually Discord on one screen and a web browser on the other. Comms on the left and active task on the right.

I don't see a use case in my workflow for a third screen, especially not one that is a weird size or is in portrait orientation. But if one was simply bestowed upon me, I'm sure I'd find something to do with it sooner or later. There was a time where I though two monitors was overrated, I'm sure I can adapt my opinion again for 3+.

Data on one side, assessment write up on the other. Extremely convenient. Not sure if I’m more productive or if I’m just happier.

2 27” 4k monitors. I do 98% of everything on the main monitor. The screen to the right contains a few sticky notes (I use Zhorn Stickies) and a Ticktick widget with all my tasks for the day. When I start up Obsidian, I have a saved Ivy Lee list that appears in a spot on the right side monitor as well. It’s just basically quick-glance scrap space.

I have an 34inch ultrawide as my main, and two 27inch screens, one above and one to the side. It's pretty awesome, play a game or do some work on the main monitor, videos, web pages, instructions in the right, and discord or other pages on the top.

Three monitors here. I'm an engineer so left monitor is usually reference material (drawings, spec sheets, formulae, etc), center is usually my primary workspace (email, python, CAD, etc) and right is music, communications, and calendar for the next goddamned meeting.

Left and center are 24" 1080p, right is 15" laptop. I'm thinking of upgrading the next time the office gets tech money.

I have two monitors but swap between two desktops. I wish I had a triple setup. I usually do hella coursework on it. I use split screen in each monitor so I have the guidelines of the project the full window project, documentation/notes, word, then discord, IRC, and background music.

I've got two monitors which mostly ends up meaning I have twice the amount of screen to lose application windows in.

I have 2 at work. Sometimes I just have our ticket software on one and Firefox on another both full screen. When works crunching I might have multiple PDF manuals open on one and PDF schematics on another and could use a 3rd for a browser window to search for old similar problems in our daily reports. I'm able to work best when I can keep 1 screen dedicated to what I'm working on and the others for information gathering.

At home I typically just have 1 screen for gaming. I might set my laptop up on the desk if I want to browse the web or chat while playing.

Media editing and production. Otherwise it's dope to have my email, texts, torrents, Explorer/Finder, and music occupy one screen, and my web browser in the other.