Arq backs up your files.

You control your data.

Arq® is backup software for your Mac or Windows PC.


30-day free trial

Version 6.2.66 for macOS Released 14 November 2020 Release Notes
Version 6.2.64 for Windows Released 2 November 2020 Release Notes
"more reliable and easier to use than CrashPlan" MacWorld review


Arq Backup protects whichever files you tell it to back up, automatically.

Backups are stored in your cloud account or NAS or SFTP server so you don't lose your files.

No one else can read your backups because everything is encrypted before it leaves your computer with a password only you know.

Go back in time.

Arq keeps multiple snapshots of your files — a backup history. So if you discover a file was corrupted, or accidentally deleted, or encrypted by a ransomware attack, you can go back and get the old version.

Back up to
your own
cloud account.

Arq Backup integrates with many different cloud providers. So if you have a cloud account with some extra space available, use it for encrypted, versioned backups of your important files.

You can also back up to an SFTP server or an external drive or a NAS.

Or back up to all of the above! Arq can back up to multiple destinations.

We also offer Arq Premium: the same great app but with built-in storage.

Lots and
lots of

Efficient — compression, de-duplication, block-level incremental backup

Unlimited backup — backs up any file size, file type, external drive, network share

Versioned file backup — keeps multiple versions of your files; if you discover a file is corrupted, go back in time to get an earlier version

Unlimited retention — keeps backups of your USB drives even if you never reconnect them

Ransomware protection — point-in-time recovery of files

Restore right from the app — no downloading of zip files

Configurable to your needs:

  • back up hourly or daily
  • prevent backup on specific Wi-Fi networks and/or network interfaces
  • prevent backup while on battery power
  • limit bandwidth usage
  • limit retention to reduce storage usage
  • custom file/folder exclusion rules
  • include network shares

Awesome customer service

Stable, self-funded, owner-operated, profitable company since 2009

Happy customers!

Hey @arqbackup . You just saved my bacon because I was in a hurry and did not pay attention. Because of you, no files were harmed, no data was lost. #backup #backup #backup #alwaysbackup

15 Feb 2020

Bought @arqbackup today - great backup software.

16 Dec 2019

Thank you @arqbackup . I've been using you to back up since 2016 with no real recovery needs, but today you saved my bacon and I easily recovered something I deleted by accident.

12 Sep 2019

I feel like I don’t give my cloud backup software enough love.
@arqbackup makes Mac/Windows backup to the Cloud to a plethora of platforms super easy.
I would highly recommend it for an off-site backup solution. I use it both for my desktop and laptop.

8 Jun 2019

Love @arqbackup. First time restoring a folder I accidentally deleted that Windows couldn't recover. Quick and easy.

3 Apr 2019

External Harddrive died with ~250 Gigs if Pictures of mostly my Family. Thankfully had @arqbackup set up and currently restoring everything. Thanks, you guys rock!

8 Feb 2019

Successfully used @arqbackup to restore over 1TB of data from @backblaze B2 storage. I’ve used Arq to restore a file or two here and there, but this is the first time restoring from a complete disk failure. Great to see it worked so well!

16 Oct 2018

If you are looking for an affordable cloud backup system that supports strong crypto and differential backups, make sure you check out @arqbackup…

A big THANK YOU to ARQ for consistently quick responses to email support Q’s and staff that know EXACTLY how to fix the problem…

2 Aug 2018

Using @arqbackup to retrieve 200 GBs of photos after a destroyed laptop incident is seriously amazing.

20 June 2018

Thanks to @arqbackup for their help getting my backups working again after a Windows update messed up multiple installed applications, even though the root problem wasn't to do with Arq.

15 June 2018

We've been building trust for a long time

Arq has been in development since 2008 and on the market since 2009. We've spent a decade so far improving Arq's reliability and simplicity and providing excellent customer service.

We're a stable, profitable company with no outside-investor pressures, so we can always do what's right for our customers.

The result is a brand trusted by 100,000+ people to protect their files.

Frequently Asked Questions

Support Options
I need assistance with Arq. How do I contact the Arq support team?
We provide support via email. Please email for assistance. We strive to answer emails within 1 business day.
Do do offer support via Twitter?
We announce things on Twitter and we try to keep up with incoming questions, but we're much more effective via email. Please email for assistance.
Licenses and Subscriptions
What is the difference between Arq 6 and Arq Premium?
Arq 6 is an app that you install on your Mac or Windows PC that backs up your files to whatever storage location you configure (see "Back up to your own cloud account" above).
Arq Premium is a subscription that includes a license for Arq 6 plus a built-in cloud storage option that we manage for you. It includes web access to your backups. Additional GBs over the 1TB of storage are billed at $.0059/GB per month.
I purchased a "lifetime" license code for Arq 5 or Arq 4. Can I use it with Arq 6?
Yes. If you had Arq 5 installed when you installed Arq 6, Arq 6 will use the lifetime license information from Arq 5's configuration files.
Arq 6 Backward Compatibility
Is Arq 6 backward-compatible with Arq 5, Arq 4, etc?
Arq 6 will read and restore from backup data created by previous versions of Arq.
Arq 6 can't reuse backup data or settings created by Arq 5. We're working on Arq 7 which will function just as Arq 5 did — same folder structure, same exclusion process, same path-based file selection (on Mac), same Network Volume feature (on Windows). We plan to deliver Arq 7 end of 2020 or very early 2021. Arq 7 will be a free upgrade for Arq 6 customers, and we will offer a discount to upgrade for Arq 5 users.