Novosibirsk free electron laser (NovoFEL), based on an energy recovery linac, was commissioned in 2003. The first stage, consisting of a one-turn track and a laser resonator, is operating for users in the far infrared (110 – 240 mm) region from 2004. Recently, all four turns of the accelerator system has been assembled, whereupon the system became the first multi-turn energy recovery linac. The radiation from the second laser resonator (40 – 80 mm) is already available to users. The third laser resonator (5 – 20 mm) is under commissioning. Investigators from about twenty research institutes, universities and high-tech companies are carrying out experiments in the fields of physics, chemistry, biology, medicine, and technology at six user stations. In this talk the status of NovoFEL is described. The instrumentation developed for experiments with high-power terahertz radiation is survived, and the results in optics and photonics obtained at the SPIN user station are described.