ownCloud is a free, open source, Dropbox-like file synchronization and cloud service. Since it can be setup and hosted on private servers it has no set limit on storage capacity or the number of connected users.
- File storage in conventional directory structures or via WebDAV;
- Encryption of user files;
- Synchronization of ownCloud Client running Windows (Windows XP, Vista, 7 and 8), Mac OS X (10.6 or better), or Linux;
- Calendar (also as CalDAV);
- Task scheduler;
- Address book (also as CardDAV);
- Music streaming (through Ampache);
- User and group administration (via OpenID or Lightweight Directory Access Protocol);
- Sharing of content across groups or public URLs;
- Online text editor with syntax highlighting and code folding;
- URL shortening Suite;
- Photo gallery;
- Video viewer;
- Portable Document Format viewer (using PDF.js);
- Viewer for OpenDocument Files (.odt, .odp, .ods);
- Firefox Sync/Mozilla Sync hosting — Mozilla Firefox users can store all history, form data, bookmarks etc. in an ownCloud server;
- External storages such as Dropbox, GoogleDrive, or Amazon S3 can be mounted to an ownCloud installation;
- Customizable with one-click application install;
- Logging Module: supports logging of file-related actions, logs, who accessed what, when and from where. Only available ownCloud Business, Enterprise and Education Editions.
The following will be needed in order for ownCloud to function properly:
- A web server - (Apache, Lighttpd, Nginx, or likewise).
- webapp-config - (app-admin/webapp-config) to easily install ownCloud Server to an vhost directory.
- PHP 5.4.9 or greater - for owncloud-5.0.13-r1 and up.
Building and Installation
vhosts USE will be enabled, so do before the install. The following is a list of possible USE flags.
USE flags for www-apps/owncloud Web-based storage application where all your data is under your own control
emerge --ask www-apps/owncloud
Installing ownCloud server in the vhost directory via webapp-config
Requires the package webapp-config command (app-admin/webapp-config):
vhosts USE is enabled, this command will install the ownCloud server version 5.0.13-r1 for the domain
myDomain.com to the directory cloud which will (normally) be located in /var/www/myDomain.com/htdocs/
webapp-config -h myDomain.com -d cloud -I owncloud 5.0.13-r1
Make sure that this directory is added as a vhosts directory.
Updating ownCloud server in the vhost directory via webapp-config
This command will update the installed ownCloud server which is located in the directory cloud to the version 5.0.14
webapp-config -h myDomain.com -d cloud -U owncloud 5.0.14
Removing ownCloud server from the vhost directory via webapp-config
This command will remove the installed ownCloud server version 5.0.14 which is located in the directory cloud.
webapp-config -h myDomain.com -d cloud -C owncloud 5.0.14
Activate ownCloud Cronjobs (for more information)
crontab -u apache -e
*/15 * * * * php -f /var/www/mydomain.com/htdocs/cloud/cron.php
PHP_TARGETS="php5-4" emerge -av dev-php/pecl-apcu
Then restart the php-fpm service:
To verify if apc is working, copy apc.php in the www folder
cp /usr/share/php/apc/apc.php /var/www/
Open it with a preferred web browser.
Disable integrity check
Currently, the integrity checker complains when there is a .webapp file in the root of the OwnCloud installation directory. This file is generated, and required, by the webapp-config tool used to install all web apps on Gentoo. One possible temporary solution to this is to disable integrity check. This can be accomplished by adding the following to config.php:
'integrity.check.disabled' => true
Install the client by emerging the following package:
emerge --ask net-misc/owncloud-client
You may have to install libgnome-keyring to enable owncloud-client support for gnome-keyring. 
emerge --ask gnome-base/libgnome-keyring
Otherwise it may try to use kwallet.
- Dropbox — a closed source file synchronization and cloud service utility built from open and closed source software.
- SparkleShare — a cross platform, free, open source, Dropbox-like, git-based collaboration and file sharing tool.
- Webapp-config — Gentoo's installer for web-based applications.