S3QL is a file system that stores all its data online using storage services like Google Storage, Amazon S3, or OpenStack. S3QL effectively provides a hard disk of dynamic, infinite capacity that can be accessed from any computer with internet access running Linux, FreeBSD or OS-X.

S3QL is a standard conforming, full featured UNIX file system that is conceptually indistinguishable from any local file system. Furthermore, S3QL has additional features like compression, encryption, data de-duplication, immutable trees and snapshotting which make it especially suitable for online backup and archival.

Google not only reserves the right to take away or vaporize our data for any reason, but it also reserves the right to discontinue services, the means to access it, whenever it wants. It does this more often than you probably realize and most recently with Google Reader, which disappears on July 1.

ElasticInbox is open source, reliable, distributed, scalable email store. The goal of this project is to provide highly available email store without a single point of failure which can run on commodity hardware and scale linearly. ElasticInbox can easily scale to millions of mailboxes, with hundreds of thousands messages in each mailbox.

Tahoe-LAFS is a Free and Open cloud storage system. It distributes your data across multiple servers. Even if some of the servers fail or are taken over by an attacker, the entire filesystem continues to function correctly, including preservation of your privacy and security.

A one-page summary explains the unique properties of this system.

ownCloud gives you universal access to your files through a web interface or WebDAV. It also provides a platform to easily view & sync your contacts, calendars and bookmarks across all your devices and enables basic editing right on the web.

There are two important reasons why bind_columns() is so awesome:

First, it greatly reduces the complexity of the code within the while() loop since you do not have to lookup in to an array ($sth->fetchrow_array()), de-reference an array ($sth->fetchrow_array()), or de-reference a hash-ref ($sth->fetchrow_hashref()). Instead the values themselves are available via appropriately named scalars.

Secondly, when using bind_columns() DBI is re-using the same scalars every time a fetch() is done which is much faster than creating an array or hash every fetch and typically causes the values to be copied one less time than normal. Benchmark it yourself – bind_columns() can make a huge difference when processing large sets of data.

SparkleShare is a collaboration and sharing tool that is designed to keep things simple and to stay out of your way.

Syncany is an open-source cloud storage and filesharing application. It allows users to backup and share certain folders of their workstations using any kind of storage, e.g. FTP, Amazon S3 or Google Storage.

BrowserCouch is an attempt at an in-browser MapReduce implementation. It's written entirely in JavaScript and intended to work on all browsers, gracefully upgrading when support for better efficiency or feature set is detected.

Not coincidentally, this library is intended to mimic the functionality of CouchDB on the client-side, and may even support integration with CouchDB in the future.

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To learn how to use BrowserCouch, check out the work-in-progress tutorial.

If you are familiar with vcs software such as Subversion, you might think of boar as "version control for large binary files". But keep reading, because there is more to it.

Boar stores snapshots of directory trees in a local or remote repository and provides tools to ensure that your data is consistent and complete. You can keep just some or all of your data checked out for viewing and editing.

The repository has a simple layout to ensure that the data can easily be extracted even if the original software should be unavailable. This simplicity makes boar ideal for data that needs safe long-term storage.

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