Aurobindo & The Mother 
A very extensive site with links to literature, communities, ashrams and Auroville
Hindu Saints 
Biographies and select works of a few Hindu saints
Vivekananda's Chicago Address 
The text of this immortal speach
Quotes from Vivekananda
"Never say NO, Never say, 'I cannot', for you are INFINITE. Even time and space are nothing as compared with your nature. You can do anything and everything, you are ALMIGHTY." 
Ramana Maharishi
 The official website with translations in European languages
Amritanandamayi
 The official site of Mata Amritanandamayi  
Ashoreshwar Bhagwan Ramji
 Teachings of the renowned Aghor saint 
Omkarananda
Snippets from his speeches make good reading
Prabhupada
Founder of ISKCON, his teachings have contributed significantly 
Chinmayananda
Probably one of the greatest interpreters of the Gita and Vedanta, today his legacy remains 
Vivekananda
Vivekananda represented Hinduism at the World Parliament of Religions at Chicago. This highly accessible collection of brief vignettes of his teachings appears as a guide for seekers of various traditions 
Swaminarayana Gadi 
Info about this 18th century saint