Tarsnap - Online backups for the truly paranoid

Navigation menu

Online backups for the truly paranoid

Tarsnap is a secure online backup service for BSD, Linux, OS X, Minix, OpenIndiana, Cygwin, and probably many other UNIX-like operating systems. The Tarsnap client code provides a flexible and powerful command-line interface which can be used directly or via shell scripts.

At the present time, Tarsnap does not support Windows (except via Cygwin) and does not have a graphical user interface.

Start using Tarsnap now!

With five minutes to download and install Tarsnap and $5 for an initial deposit, you can get started with Tarsnap today and stop worrying about whether your data is safe.

Tarsnap pricing

Tarsnap works on a prepaid model based on actual usage.

Storage: 250 picodollars / byte-month
($0.25 / GB-month)
Bandwidth: 250 picodollars / byte
($0.25 / GB)

These prices are based on the actual number of bytes stored and the actual number of bytes of bandwidth used — after compression and data deduplication. This makes Tarsnap ideal for daily backups — many users have hundreds of archives adding up to several terabytes, but pay less than $10/month. [How?]

Tarsnap has no fixed or minimum monthly fees!

Tarsnap is billed only based on actual usage — if you only store a small amount of data, a $5 payment might last you for years.

Tarsnap news

Tarsnap 1.0.36 released - August 21, 2015

Version 1.0.36 of the Tarsnap client code is now available for download. This version fixes a theoretically exploitable one-byte buffer overflow when archiving objects with long path names; a vulnerability which allows a corrupt archive to crash tarsnap; and two bugs which cause tarsnap to crash if the network is inoperative when it launches. This version also adds support for performing "dry runs" without tarsnap keys, which makes it possible to estimate tarsnap usage costs without first creating a tarsnap account.

Tarsnap book - March 18, 2015

Tarsnap Mastery, a book from respected technical author Michael W. Lucas about using Tarsnap, is now available in electronic and print formats.

Price cut - April 2, 2014

Effective April 1st, Tarsnap's prices are now 250 picodollars per byte-month of storage and per byte of bandwidth ($0.25 / GB), down from the previous pricing of $0.30/GB.

Older news...