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Executive summary dvcs-autosync is a project to create an open source replacement for Dropbox/Wuala/Box.net/etc. based on distributed version control systems (DVCS). It offers nearly instantaneous mutual updates when a file is added or changed on one side but with the added benefit of (local, distributed) versioning and that it does not rely on a centralized service provider, but can be used with any DVCS hosting option including a completely separate server - your data remains your own . Synchronization of directories is based on DVCS repositories. Git is used for main development and is being tested most thoroughly as the backend storage, but other DVCS such as Mercurial are also supported. dvcs-autosync is comparable to SparkleShare in terms of overall aim, but takes a more minimalistic approach. A single Python script monitors the configured directory for live changes, commits these changes to the DVCS (such as git) and synchronizes with other instances using XMPP messages.
DVCS-Autosync: A personal Dropbox replacement based on Git | Rene Mayrhofer's virtual home
chmduquesne/sharebox-fs - GitHub
Here is sharebox, a project of a distributed synchronizing filesystem. We want a filesystem that will synchronize arbitrary data between several machines. This filesystem has to be simple, and to provide as efficiently as possible a set of minimum features: Offline access : it should be possible to modify data while not being connected to the internet, and get the data synchronized when the connection is restored. Conflict handling : if the same document is modified in several places, the system should keep both versions and yet provide a simple way to choose between the two versions. Ideally the remote conflicting version should be shown as a hidden file.
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. While the basic idea is similar to Dropbox and JungleDisk, Syncany is open-source and additionally provides data encryption and more flexibility in terms of storage type and provider: Local Folder : uses any local folder as storage.
Syncany - Open-source file synchronization and filesharing application
Unison is a file-synchronization tool for Unix and Windows. It allows two replicas of a collection of files and directories to be stored on different hosts (or different disks on the same host), modified separately, and then brought up to date by propagating the changes in each replica to the other. Unison shares a number of features with tools such as configuration management packages ( CVS , PRCS , Subversion , BitKeeper , etc.), distributed filesystems ( Coda , etc.), uni-directional mirroring utilities ( rsync , etc.), and other synchronizers ( Intellisync , Reconcile , etc). However, there are several points where it differs: Unison runs on both Windows and many flavors of Unix (Solaris, Linux, OS X, etc.) systems. Moreover, Unison works across platforms, allowing you to synchronize a Windows laptop with a Unix server, for example.
Unison File Synchronizer
UPDATE #4 It’s 2012, and this project is still alive, although I haven’t worked on lipsync as much as I should. I want to, and have new ideas to implement and try out in the next few months. The two way sharing is a bit hacky, and I don’t like it, the installer creates a cronjob : that checks for server changes to sync back every minute - and it tries to avoid conflicts by not running if a sync the other way is happening .
HOWTO build your own open source Dropbox clone
Storage and online Backup Pricing Plans - SpiderOak.com
SpiderOak's philosophy on pricing is simple - backup, synchronize, share, access, and store as much as you like and we will only bill you for the amount of storage used. You can backup, synchronize, and share data across all of your computers, external drives, and/or network volumes - from anywhere and everywhere. And what's better, we offer you 2 GBs free - for life - enjoying all of the features SpiderOak has to offer.
SparkleShare - Sharing work made easy
Setting up your own host to work with SparkleShare is relatively easy. We've written a short page about it. The documentation and FAQ should handle most of your questions.