As I mentioned in my Phaladhara-Panchadhara post, Bhagawan Adi-Shankara Bhagavatpada is a great Advaita Philosopher. Shivananda Lahari is a devotional hymn on Shiva, composed by Bhagawan Adi Shankara, in the 8th-century. It literary means “Wave of Auspicious Bliss.” It consists of one hundred stanzas of Sanskrit poetry in various chandas (metres). Bhagawan Adisankara wrote this devotional hymn when he was in Srisailam especially he was at Phaladhara-Panchadhara.
I have found an excellent website http://shaivam.org where the entire Shivananda Lahari translated into English by Shri P.R.Ramachander. That only I have mentioned here. The work is superb.