A Jyotirlingam is a devotional object representing the Supreme God Shiva.
Jyoti means 'radiance' and lingam the 'Image or Sign' of Shiva; Jyotir Lingam thus means the The Radiant Sign of The Almighty Siva.
There are twelve traditional Jyotirlinga shrines in India.

The twelve jyothirlinga are
Somnath in Gujarat,
Mallikarjuna at Shrishailam in Andra Pradesh,
Mahakaleswar at Ujjain in Madhya Pradesh,
Omkareshwar in Madhya Pradesh,
Kedarnath in Uttrakhand,
Bhimashankar at Pune in Maharashtra,
Viswanath at Varanasi in Uttar Pradesh,
Tryambakeshwar at Nashik in Maharashtra,
Vaidyanath Temple at Parli, Maharashtra ,
Aundha Nagnath at Aundha in Hingoli District in Maharashtra,
Rameshwar at Rameshwaram in Tamil Nadu and
Grushneshwar at Ellora near Aurangabad, in Maharashtra.

JyotirlingaStotram describes the 12 Jyotirlingas.

This app has
Kannada,Telugu,Hindi,
Tamil,Malayalam,Bengali,
Oriya,Gujrati
version of the stotra.