Jeff Flynn

We offload our background processing tasks (photo sizing, watermarking, etc.) to Sidekiq to keep our app's performance optimal. Sidekiq

We like CoffeeScript because it's more readable, we use it because we have a lot of libraries and functions already (plays nicely with Rails, too) CoffeeScript

We prefer CircleCI because we care about testing our apps. We found it is better to invest the time writing rSPEC tests to ensure we don't insert any regression bugs with new branches. It's also nice to have a fully-automated deployment process from GitHub to Heroku. CircleCI

If you care at all about application errors, you should be using this. Hands down. Sentry

Because it is almost an effortless markup language without ever having to write an HTML tag. Of course, you'll want to use it in environments that make it look pretty (GitHub, etc.) Markdown

Although there are more options out there now, some with better pricing, it was the first and most widely-available tool for sharing content. Our app is asset-heavy (images, videos, icons, etc.) and it makes it dead-easy to move stuff around. Still love it even if it's showing its age. Dropbox

Have gone from TextMate to Sublime and now to Atom - in love with it - it's open source, it's got a massive contributor community, and it works well. (A bit slow and bogged down with lots of files, but we'll all make it faster over time) Atom

In my opinion, the best Content Delivery Network for the money. This, along with other services from AWS's ecosystem make this the easy choice for CDN. Fast, simple and cheap. Amazon CloudFront

As much as I love AWS EC, I prefer Heroku for apps like this. Heroku has grown up around Rails and Ruby, massive set of add-ons that are usually one-click setup, and I once had to perform an emergency app scale-up a that I completed in seconds from my mobile phone whilst riding the Bangkok subway. Doesn't get much easier than that. Heroku

Easy and efficient storage, plus a big set of Ruby Gems that help take any complexity of content management in the cloud. Then turn on CloudFront with your S3 buckets, and boom! Instant CDN. Amazon S3