Page "Separation of powers" Paragraph 15

Complete separation-of-powers systems are almost always presidential, although theoretically this need not be the case.

There are a few historical exceptions, such as the Directoire system of revolutionary France.

Switzerland offers an example of non-Presidential separation of powers today: It is run by a seven-member executive branch, the Federal Council.

However, some might argue that Switzerland does not have a strong separation of powers system, as the Federal Council is appointed by parliament ( but not dependent on parliament ), and the judiciary has no power of review.