Message from masters is an interesting site. It is worth visiting and it should be approached as an adventure for free books in itself. The site’s design come across as a bit amateurish and the navigation may be stiff at times. But behind these minor barriers is an impressive collection of free spiritual books from reliable teachers such as Jiddu Krishnamurti and Ramana Maharshi. In addition, there is a really interesting collection of free Buddhist and Hindu texts, including the Zen Teachings of Rinzai, which I consider a jewel in its kind.
Sometimes I got the feeling of being lost in a Osho devotee site. Let alone what you might think of Osho, the teacher formerly known as Bhagwan Shree Rajneesh, the website features the man a lot. So if you like Osho, there is a bonus for you here. That said, the site does a very good job in offering other free spiritual books. It requires some digging, but besides the aforementioned works you can find here nice works of Gurdjieff, Ramakrishna, Hermann Hesse and Meher Baba.