Other Organisations
There have been other pan-European organisations which have not adopted the same symbols as the Council of Europe or the European Union, or have symbols derived from these. The Flag of the European Coal and Steel Community (the first of the three European Communities) was developed around the same time as the Flag of Europe and shares the use of stars and the colour blue, but uses completely different arrangement and symbolism.
The Flag of the Western European Union (the European defence organisation) was derived from the Flag of Europe, altered for its own usage. The Central Commission for Navigation on the Rhine predates them all, but its flag also uses the colour blue and a circle of stars, though with different symbolism.
Read more about this topic: Symbols Of Europe