What is the best alternative to Tarsnap?

The Spideroak client is available for Linux, MacOS, Windows, Android and iOS.

Data is locally encrypted before uploading to Spideroak. They cannot recover your data even if they wanted to since it is stored in encrypted state on their servers.

You set it up once and from then it runs in the background whenever you are not using your computers (or at specified times).

You can set up different files/folders to back up to specific places.

CrashPlan updates only that part of the file that has changed, saving bandwidth and time.

Allows you to store your HD videos, FLAC music files, and large documents.

Computers see it as a network drive.

Backup and use your files from any device with Windows, Mac, Linux, Android, or iOS.

There are no limitations of file size or amount of data you can upload. The $5/mo plan gets you unlimited cloud storage.

The default configuration includes everything except for system files to be backed up. That also includes external USB drives. This will work for most people. It can, of course, be customized to each person's liking.

Backblaze creates a zip file of all your files for you to download, thus decreasing the amount of data you need to download and increasing the speed of the download since it's one connection instead of multiple that need to be opened and closed for a list of files.

No privacy concerns.

Amazon services offer solutions with almost 100% durability and 99.99% availability. Even if the system loses data-centers, you will still be able to access your files.

Arq is client-side software that runs on your computer and talks directly to generic cloud data storage providers. No third-party service in the middle means lower costs, better reliability, lower risk of a service ceasing to operate, ease of migration to other storage targets. Amazon Glacier a...

Data is encrypted locally before being sent, and kept encrypted by a key that is never stored on the remote machine. So you might even store your data on a public space, people would still need your key or brute force it.

Duplicity uses the rsync algorithm so only the changed parts of files are sent to the archive when doing an incremental backup. For instance, if a long log file increases by just a few lines of text, a small diff will be sent to and saved in the archive. Other backup programs may save a complete co...

You can retrieve older versions or files you recently deleted locally even after having updated your backup.

Same price a Google Drive, but more flexible as you pay for what you use (Google Drive you have to jump from 100 MB to 1 TB for example). Also supports larger backups.

Versioning can be enabled at no extra cost so you may retrieve older versions or deleted files.

duplicity allows to encrypt data locally using GPG and it supports Google Cloud Storage.

Stash is a local sync folder similar in functionality to Dropbox.

Mozy end-users are not susceptible to social engineering. At Mozy, there is no one person who can authorize the deletion of a given individual’s data. Our process of cleaning and deleting a customer’s data is a very structured and automated process, and you can’t call us up and short circuit...

There's no cap in storage or traffic. Cost is based on usage.

S3 storage costs $0.03 per GB and gets cheaper the more is stored, PUT, COPY, POST, or LIST requests are $0.005 per 1,000 requests and GET and all other requests are $0.004 per 10,000 requests. And with some restrictions is available for free for a year.

Simple to set up with Amazon's CloudFont CDN.

$0.007 per gigabyte per month is comparatively cheap and allows for large amounts of cloud storage.

If you wanna host your database on the cloud server, you can have both the option as Database as a Service (Pre-installed and managed database) or Infrastructure as a Service (If you want to have root access and manually want to install the database).

All the cloud services are with 99.95% uptime.

F(x) Data Cloud provides public cloud server at a cheap price. The basic plan starts at $1.99/month.

Box is available for Windows, OS X, iOS, Android, BlackBerry and Windows Phones. Which mean access to ones files no matter the device or platform used.

There are plug-ins for applications that allow interactions with Box.

For users in the US there is a option to receive their backup data on external media, meaning not only is there a backup in the cloud but you can order hard backups anytime.

Does not require deep system knowledge to operate Carbonite's software.

The $59.99/yr plan gets you unlimited cloud storage.

Elasticity in the pricing allows for users to only pay for what they use in data, this way there is no overcharging when ones limit wasn't hit. This also allows for users to constantly change their backup usage without fear of being charged too much or having to constantly switch their plans.

User can choose to backup to their own private cloud as well as a public cloud such as AWS. This choice allows for piece of mind as to where ones data is residing.

User have the option to test out the software with a 30 day free trial.

Encryption is performed before content gets uploaded to the cloud.

With clients for Windows, Mac, iOS, Android, Windows Phone, and Blackberry.

5 GB, up to 16 GB with bonuses.

If you use Office 365 with OneDrive, you can share a file to edit collaboratively in real time.

It integrates with Word, Excel, PowerPoint, etc as if you were using OneDrive locally.

Once setup OneDrive folder and local folders can be the same slowing for seamlessly integration into Windows OS.

There's also three upgrade plans, starting at 500GB and $110/yr.

Linux, Windows and Mac.

All files uploaded to Mega are first encrypted on the users side. To access files a decryption key must be supplied. For ease of use, the decryption key can be appended to the URL you share.

This space is shared across Drive, Gmail & Picasa.

Google account holders and non-holders can be set to access and/or collaborate on files/folders in real-time. Additionally, you can find files you've shared not only by filename but by person you've shared the files with.

For example, you can use search to search through both Drive and Gmail.

You can use Dropbox via website, by installing a desktop client that creates a folder that you simply drag and drop files into, or with their mobile app. Everything synchronizes across all devices used and cloud storage. And Dropbox offers easy methods of sharing whatever is within it.

Whether using desktop client or web interface, simply right click on the file you want to share and select Dropbox > Share link, then send the link to the people you want to share the file with. The recipient does not require a Dropbox account.

Dropbox is available on iOS, Android, BlackBerry, Windows, OS X and Linux. By having a client for so many OS's pretty much anyone is covered no matter what kind of device or OS they are using.

iCloud syncs a users settings and files across a range of Apple hardware making for a simple solution to backup and sync data across ones Apple devices.

Integrates different office tools such as Keynote or Pages for writing and presentations, etc with iCloud.