This article relies on a corpus of newspapers and Egyptian scientist writings dealing with this issue. It proposes a classification of Egyptian political parties under the regime of Mubarak, based upon their degree of integration in the political system. This degree of integration depends on the combination of two elements: the amount of resources of each party which are dependent on the political power (legalization, money, and chairs in Parliament), and the quantity of independent means (money, estates, activists, candidates, and so on). Combining these two criteria, I constructed three types of Egyptian political parties : those which are excluded from the political system, those which are integrated, and lastly those which are co-opted. These latter didn't have any means but from the government, and consequently supported the regime. Integrated parties had independent resources, but the political power gave them some advantages. They didn't try to confront the regime during the last years, and stayed away from protest movements. Lastly, excluded parties had interest to end the regime. Consequently, they took part into the protest movements of the last decade. This classification explains the positions of the Egyptian political parties during the revolution, giving their immediate interests, and their links with protest movements.