What are some popular philosophies other than philosophical buddism?

some of my favorite philosophies are those of existentialism and philosophical Tao . though these have some ideas contradicting one another, they all make very good points. Soren Kierkegaard’s existentialism states that every man will inevitably fall into a state of malaise, but through repetition of the best past experiences and putting yourelf in new situations, then you may make your life a truly free experience. the philosophy of Tao can truly be summed up by the Tao Te ching of Lao Tzu. One must never do anything, for only when nothing is done is nothing left undone. Tao may be compared rather closely to buddhism but they are actually quite different. but read the Tao Te Ching, The sickness unto death, either/or and repetition for a background on both of these