TheMozilla Calendar Project was the name for theMozilla project that led to the development ofSunbird calendar application and theLightning integrated calendar.[1] Sunbird and Lightning are bothfree software, released under the Mozillatri-license: theMozilla Public License, theGNU General Public License and theGNU Lesser General Public License.
The project started with a single extension for the Mozilla projects known asMozilla Calendar. It was afree software /open source calendar andpersonal information manager based on the openiCalendar standard. It was developed to be part of theMozilla Application Suite project. However, Mozilla Sunbird and the Lightning project have replaced the Mozilla Calendar. As with other Mozilla projects, Mozilla Calendar wascross-platform, and used theXUL user interface language. It worked withMicrosoft Windows,Linux,Mac OS X, andFreeBSD.
The Mozilla Calendar project was announced by theMozilla Organization (now theMozilla Foundation) in October 2001. The original code, used by Mozilla Calendar and now the Mozilla Sunbird, was donated by OEone (now Axentra),[2] who had developed it for use in their Mozilla-based HomeBase DESKTOP system. The project was initially led by OEone employee Mike Potter. Shortly after Mike Potter and his team had to pull out of development due to other projects taking precedence,[3] Mostafa Hosseini was announced as the new project lead.[4]
The initial plan was for Mozilla Calendar to eventually be integrated into theMozilla Application Suite alongside the other components. However, this plan was dropped when Mozilla decided to focus on its nascent standalone applications rather than the integrated suite.
Mozilla Calendar could be installed as a component in the Mozilla Application Suite, or as anextension in either theMozilla Firefox standalone browser or theMozilla Thunderbird standalone mail and newsgroups client. The extension has now been replaced by theLightning project, a project with similar features, but with tighter integration with Thunderbird.