duplicity vs Dropbox

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 copy of the file.

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

Licensed under GNU GPL v2.

Duplicity does not make many demands on its archive server. As long as files can be saved to, read from, listed, and deleted from a location, that location can be used as a duplicity backend. Besides increasing choice for the user, it can make a server more secure, as clients only require minimal access.

Docker allows to run programs on any Linux without having to really install them, and allows to manage versions so it runs exactly the same on different machines.

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.

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.

Using a desktop client: right click on the folder you want to share and select Dropbox > Share This Folder, then enter the e-mail addressees of people you want to share the folder with.

If a small portion of the file is changed it sends/receives only the differences (not the whole file), which is fast and bandwidth-efficient.

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 personal accounts start out free, with 2GB of space, but users can get extra space by recommending the site to friends, or taking part in events like "Dropquest", where users can win extra space by solving puzzles.

Dropbox offers native Linux support, integrates with Nautilus file manager.

As long as you have enough storage available, you can upload files of any size using Dropbox desktop client.

To save bandwidth and download speed you can choose to compress a folder into a zip archive for download.

To not slow down the network or save traffic you can limit the upload and download speeds of Dropbox.

There are official and third-party Dropbox add-ons that extend the functionality of the service and add ease of use of existing features.

Additionally, Dropbox can be integrated with existing applications to bring its functionality to other apps.

Dropbox keeps deleted and earlier versions of files for a month.

Your files always synced online means instant disaster recovery. When your hard drive becomes unbootable, pick up another laptop and just carry on with your life from where you last saved.

You get extra free space for you and your friend if they sign up.