Arq Backup: Press Kit

Thanks very much for taking a look at Arq.
Below are some assets which might be helpful.
If we can assist in any way, please send email to and we'll respond promptly.

Product Video

Here's our low-budget 90-second introduction video:

One-Sentence Product Description

Arq backs up your files securely and lets you keep control of your data.

Paragraph Product Description

Arq backs up your files securely and lets you keep control of your data. Arq is super simple to set up. It backs up your files to your own cloud account (Amazon Cloud Drive, AWS, Dropbox, Google Drive, Google Cloud Storage, OneDrive, and SFTP). Arq protects your data through strong encryption with a key only you know. Arq uses multiple threads and LZ4 compression for very fast throughput. Arq offers sophisticated file-exclusion filters, storage budgeting, extensive logging, email reports, many scheduling options, and full control over which networks and how much bandwidth Arq uses. Arq is availabe for Mac OS X and Windows.

App Logo

Click to download 1024x1024 PNG:

Screen Shots

On the Features page


Mac OS X 10.7 or later: Download
Windows 7 or later: Download

Release Notes

Mac: Release Notes
Windows: Release Notes

Arq Data Format

Documented here


$49.95 per user


Stefan Reitshamer
Haystack Software LLC
405 Waltham St Suite 124
Lexington, MA 02421

Company Background

After a 20+ year career in software development, mostly creating enterprise software, Stefan Reitshamer felt way too disconnected from the people using the software he helped create. So in 2005 he started Haystack Software. Now he can communicate directly with customers and help them. Making customers happy makes him happy.

Arq Story

Stefan wanted an easy-to-use backup app but couldn't find that worked well. Time Machine was unreliable and didn't back up to the cloud, and the services available at the time all had limits of various kinds.

Amazon S3 was available and was unlimited; backing up to S3 felt like real backup, but there wasn't any great software to do it. So Stefan created Arq, a simple, powerful cloud backup app with encryption so that his files would be protected in the cloud.

Since then Arq's popularity has grown beyond all expectations. Arq has expanded to support backup to many cloud providers, and is available for both OS X and Windows.