My primary computer at home is a 5K iMac with 16GB of RAM, 512GB SSD, upgraded GPU and a 4.0GHz i7 CPU. I also have a 13" Retina MacBook Pro with a 1TB SSD, 16GB of RAM and a 3GHz i7 processor running OS X Yosemite. After years of editing 10,000+ photos in Lightroom on various laptops, I finally went to a more powerful iMac and have been very happy.
I use it in non-Retina mode (1680x1050) for more screen real estate, though I often switch back to Retina mode or native mode (2560x1600 — via an app called EasyRes) to test out sites. I used to have a 27-inch Apple Cinema Display but sold it anticipating Apple releasing a new model, which hasn't happened yet.Mouse
Whenever I'm at my desk I always use my trusty Logitech G500 wired mouse. I actually have three of them. One each for home, work and traveling. The mouse fits me well and never needs charging like popular wireless mice these days.Chair
The Herman Miller Embody is my desk chair of choice. At over $1,000 it's not the cheapest chair but extremely adjustable unlike any other desk chair I've encountered. As a reference point, I actually hate the Aeron chair, I find it doesn't provide much upper back support.
You may also be interested in The Coding Zone.Audio
I also have a pair of Sennheiser HD 650 Headphones for home use. They're open-ear circumaural headphones (around the ear) that are very comfortable. They do leak sound (the nature of open-ear headphones) so I only use them at home. They're stellar headphones demanding the use of a high-quality amp.
While running I use the sweat and weather resistant Bose SIE2i sport earbuds.
I use the Klipsch S4i earbuds with Comply Foam tips when I want great sound isolation — perfect for planes. I previously had the Etymotic hf3 earbuds and loved them but they went through the wash and died.
And finally, while traveling and needing some better audio in hotel rooms, I have the Nude Audio Super-M portable bluetooth speaker. It's water and sandproof so you can listen to music in the shower or at the beach.
Adobe Lightroom 5 is my post-processing tool of choice for my photo workflow. VSCO Keys lets me easily copy and paste develop settings between photos, and enable other keyboard shortcuts that make Lightroom faster for me. I don't get too crazy with add-on filter presets or plugins, I often just tinker manually. Though I will occasionally process HDR images with Photomatix Pro as well as Photomatix Merge to 32-bit for Lightroom.
After I'm done editing my photos and have exported the ones I wanted to use, I move the RAWs to Amazon Glacier for cheap, longterm storage. I use an app called Arq to do this. Though I believe there is a better way for photographers to do this as I wrote in my post Storage for Photographers.Productivity
I use Wunderlist to keep track of various lists, neat links and to-do items alongside Evernote for general notes, blog post drafts and extended thoughts. I also use TextExpander to save me time when typing out common phrases or pieces of data. Likewise, I can't say how much time 1Password saves me when logging into sites, as well as keeping me secure.Development
I have gotten used to SCM Breeze for simplifying common git commands and speeding up my git workflow.This website
Coming soon: I'll go into more detail about what I use to build this website. But it's based on Jekyll and hosted on S3/CloudFront with AWS Route 53.Design
I use Sketch and Photoshop CC 2014, but more and more I use Sketch these days for my visual design and Photoshop for cutting assets or fine-tuning images. I'm also a huge fan of xScope. I also use LayerVault to keep my designs backed up. I also use the app Characters for easily copying and pasting odd symbols (bullets, arrows, pictographs, punctuation, et cetera) as HTML entities.
iStat Menus, Dropbox, Crashplan, Authy (on mobile for 2 factor auth), Typekit, GitHub, Gauges (site analytics)
When it comes time to working out of coffeeshops with free Wi-Fi, I use a VPN service called Cloak. Especially since my favorite coffeeshop blocks ports so I can't commit to GitHub.
HTC One M8 Nexus 6 Google Play edition is my phone of choice. Fantastic build quality, great sound and battery life. I love it.
Since I design for both Android and iOS, I also have an Apple iPhone 6 Plus (64GB, Space Gray).
For testing responsive websites in Chrome/Safari, designs with Sketch Mirror and Framer.js mobile prototypes I have a 32GB Apple iPod Touch. I also have a
16GB Asus Nexus 7 Google Nexus 9 Android tablet that I often use for USB Chrome debugging. The elago M2 stand is necessary when doing lots of web development and testing on any mobile device.
For casual reading (and some web development testing) I pick up my iPad Mini 3. I prefer the Android OS and Nexus 9 overall but it's a bit too heavy to hold for long periods while reading and browsing the web. The iPad Mini is a great size.