Nāstika

The main schools of Indian philosophy that reject the Vedas were regarded as heterodox in the Brahmanical tradition:

1. Buddhism http://freeglobaluniversity.blogspot.com/search/label/Buddha
2. Jainism http://freeglobaluniversity.blogspot.com/search/label/jain
3. Cārvāka http://shukraguru.blogspot.com/search/label/Charvaka
4. Ājīvika http://rightbehaviour.blogspot.com/search/label/Ājīvika
5. Ajñana http://goddessearth.blogspot.com/search/label/Ajñana

http://www.newworldencyclopedia.org/entry/Nastika

http://nastiknation.org