When 1984 was written, the world had just gotten out of a second war and the surprising rise of communism and their totalitarian government was frightening most of the western world. In George Orwell's novel, the main concern seems to be the overtaking of a supreme, socialist totalitarian government/dictatorship. On the other hand, when Brave New World was written, the world had just been swept by a wave of mass production and consumerism, and that too is reflected in Aldous Huxley's ultra-modern, test-tube baby, sleep-taught society.
That is exactly what makes the two novels so alike and so different at the same time. To begin with both authors forecast a society of obedience and compliance, but on one hand, the Brave New World is also driven by consumerism and high advanced technology and drug abuse (soma, to ensure the happiness of the masses), " 'Now- such is progress- the old men work, the old men copulate, the old men have no time, no leisure from pleasure, not a moment to sit down and think- or even by some unlucky chance such a crevice of time should yawn in the solid substance of their distractions, there is always some, delicious soma half a gramme for half a holiday [...] returning when they find themselves on the other side of the crevice, safe on the solid ground of daily labour and distraction...'". Whilst 1984 is a bare, war stricken place with food rations and the like, "Outside, even through the shut window-pane, the world looked cold. Down the street little eddies of wind were whirling dust and torn papers into spirals, and though the sun was shinning and the sky was blue, there seemed to be no colour in anything, except in the posters that were plastered everywhere."
Both novels