CloudShack is a free amateur radio logbook server. CloudShack provides a convenient web interface to manage your contacts and stores them in a CouchDB database.
CloudShack is free software and licensed under the GNU General Public License Version 3. The source code is available on GitHub.
An internet connection is not always avialable, especially when operating portable. CloudShack is designed to function without internet just as well as with.
CloudShack works on all operating systems and is tested on Linux, Mac OS X, and Windows.
The CouchDB database provides automatic synchronization with other instances.