East Germany created its own cola drink. Vita-Cola‘s sales almost disappeared after the fall of the Berlin Wall brought Coke and Pepsi into the East. It is still the most popular cola in Thuringia, making the German state one of the few places in the world where Coca-Cola is not the leader.
There is a cola named OpenCola witch is open source. The instructions for making it are freely available and modifiable. Anybody can make the drink, and anyone can modify and improve on the recipe as long as they, too, license their recipe under the GNU General Public License.