Upang or Darshan

Difference between Philosophy and Darshan: Philosophy => Ideas, theory whereas Darshan => how to get such Ideas, theory into every day life.

There are six astik darshans (schools of philosophy): Nyaya, Vaiseshika, Sankhya, Yoga, Poorva Mimamsa and Uttara Mimamsa or Vedanta. By astik, it is meant that these darshans accept Ved as praman and not that they believe in existence of God or otherwise.

And there are 6 nastik darshans. By nastik, it is meant that these darshans donot accept Ved as praman and not that they don't believe in existence of God or otherwise.

A few links::

Upanga - Hindupedia, the Hindu Encyclopedia

Darshana - Hindupedia, the Hindu Encyclopedia

By Shankara Bharadwaj Khandavalli
Shad-Darshana - Shivalli Brahmins By Neria Harish Hebbar, MD
Shad Darshana - Six Elements Of Philosophy - GaneshaSpeaks The site has ads as well.