Who Wrote the Dead Sea Scrolls?

Since their discovery 70 years ago there have been many theories about who were the people who 2000 years ago wrote and hid hundreds of manuscripts in the caves around Qumran. Some of these theories have been rather wild and implausible, but others have stood up to critical scrutiny. Were the Scrolls written by the Essenes? Or perhaps the Scrolls Sect was a group of priests unjustly thrown out of the Jerusalem Temple?