Berlin's tech community is smaller than London's: a recent survey by Hascore.com lists 285 start-ups, compared to 1, 250 listed on London's Tech City map (although when the map was launched those figures were questioned as not all the companies appeared to be tech start-ups).

WSJ: Berlin Eyes Careful Balance To Bolster Tech Sector

It too has met with success, although a recent map promulgated by the Tech City Investment Organization, the body charged by the government with masterminding the development, that showed some 600 start-ups was met with some skepticism as companies that were not high-tech start ups had been included.

WSJ: Tel Aviv Takes the Tech-Hub Crown