The authors can be determined by looking into individual source files or examining the history in the version control system.
Permission is granted to redistribute and/or modify GriCal under the terms of the GNU Affero General Public License (AGPL) as published by the Free Software Foundation; either version 3 of the License, or, at your option, any later version.
Permission is granted to redistribute and/or modify the GriCalDroid subproject under the terms of the GNU General Public License (GPL) as published by the Free Software Foundation; either version 3 of the License, or, at your option, any later version.
The software is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of merchantability or fitness for a particular purpose. See the AGPL and the GPL for more details.
You should have received a copy of AGPL and of the GPL along with this program. If not, see http://www.gnu.org/licenses/.
The Bower component bootstrap__ is copyrighted 2011-2016 by Twitter, Inc. and licensed__ under the MIT license.
The Bower component bootstrap_datepicker__ is copyrighted eternicode__ and licensed under the Apache_License_Version_2
The calendar small icon is
Permission is granted to reproduce and/or modify the icon under the terms of the `Creative Commons Attribution 3.0 License`__. Mark James' icons are available at http://www.famfamfam.com/lab/icons/silk/.