Ibadiyah Islam is a milder form of Khariji Islam, accepting coexistence with other Islamic sects and non-Muslims to a degree. Ibadiyahs originally believed in electing their imam and, in a characteristic familiar to any modern-day Jeffersonian, never abide tyranny. Paradoxically, the Ibadi ruler is invested with absolute authority over his followers, though he can be deposed if he does not follow the law.
Ibadiyah Islam flourished under the leadership of Aby Ubaydah Muslim ibn Abi Karimah, who trained missionaries and sent them across the Arab world as far as the Maghreb in North Africa and throughout Oman in hopoes of establishing a pan-Islamic Ibadi community. The movement took hold only in Oman, where it persists to this day.