 → System Preferences → Desktop & Screensaver

I've been cycling through the BLACK wallpaper series by Jean-Marc Denis. They're great if dark minimalism is your jam!

Nothing better than total flat black.

Unsplash

I use an app called Wallcat

Not sure, haven't seen it in months.

I stopped using Wallpapers in favor of solid colors.

I up-resed a bunch of NASA images and made them 4k https://goo.gl/photos/DoWV13dz3y1JS6oS7

feel free to download them!

Abduzeedo's wallpaper of the week is a good source for me. Also InterfaceLift has a good selection of retina ones (even 5K) and I used to frequent that while I had a 5K iMac.

Not desktop, but I still want to share this: WLPPR is a great (paid) app with amazing satellite photographs. I'm trying to keep my phone as simple as possible now so I switched to a plain black wallpaper, but I did use this for a long time.

Kuvva https://www.kuvva.com/

My kids. I'll scan my favorite drawings.

http://wallhaven.cc/

Their search filters are unparalleled.

GMUNK has some amazing infrared photography, all in pretty high-res that I've been using lately.

http://photo.gmunk.com/

Artsy.net

Pretty much all from NASA :)

https://www.nasa.gov/mission_pages/mars/images/index.html

99% of the time it's from Unsplash

https://www.rijksmuseum.nl/en and stuff I like at google images "Larger than 6 MP"

A mix. Sometimes NASA, sometimes subtle patterns. Often I take cinematic screenshots while playing Fallout and run them through Prisma to simplify the detail. They work really well.

Unsplash -> https://unsplash.com/@vanschneider?photo=tmp3sxAl-DI

Google Earth Pro

I've been using Ari Weinkle's sets on desktop for a bit; and as someone else mentioned, WLPPR for iOS.

Interfacelift

I've been using some variation of this image for well over a decade: http://moheban-ahlebeit.com/images/Duck-Wallpaper/Duck-Wallpaper-5.jpg

It's my background on all my computers and phones. I don't know why I love it, I just do.

I really enjoy UIgradients.com!

http://thefoxisblack.com/category/the-desktop-wallpaper-project/

Here are some images I use: https://www.dropbox.com/sh/9gzzhm0fbtxb5d9/AACsRM8IwatPM2R9BDFVzb87a?dl=0

They are photo manipulations done by a Chinese artist named Yao Lu. They are photos of dumps in china, altered to look like classical landscape paintings.

I set the image to scale to fit the screen then change the awkward blue fill that desktop settings creates to be the same white in the frame. It makes it looks seamless and really nice. I personally have the desktop rotate between all these photos to add a little dynamism to my desktop.

I use this app to choose a different image from r/EarthPorn every hour:

https://github.com/rconradharris/reddit-background

Been using stock Mac OS papers for years, but there was a huge period of time mainly during high school / college that I used Digital Blasphemy, they make some great stuff.

System Preferences -> Desktop & Screen Saver -> Custom Color...

NASA or Flickr always has something great if you're looking for really big resolutions.

I used to have a folder full of photos from /r/EarthPorn that I'd cycle through. Since I got a new computer, it's just been the default, though. I've been meaning to set something up, thanks for the reminder!

If you have time to search ...

https://www.flickr.com/groups/mgcnature/pool/https://www.flickr.com/groups/wordlesssunday/pool/https://www.flickr.com/groups/1532071@N25/pool/

A couple of my favs... https://drive.google.com/open?id=0B7HMpUj3OipzNTJTSy1mQnBiMWc