The first version of Lithic Calendar, then a Java applet, was released in 1997, and was one of the most popular applets of the late 1990's. This was followed by a Flash version in the late 2000's and currently by the DHTML version that you see on this site. The objective in all cases was to create a calendar that was simple to customize, simple to use, and was light and stable. The current version is the most compact and most stable to date.

Lithic calendar is a brand of Upsoni, LLC, a small software company that is located in Tbilisi, Republic of Georgia. Please visit the Upsoni site to learn more about the company.