Judaism
Around the 1st century CE, there were several small Jewish sects: the Pharisees, Sadducees, Zealots, Essenes, and Christians. After the destruction of the Second Temple in 70 CE, these sects vanished. Christianity survived, but by breaking with Judaism and becoming a separate religion; the Pharisees survived but in the form of Rabbinic Judaism (today, known simply as "Judaism"). The Sadducees rejected the divine inspiration of the Prophets and the Writings, relying only on the Torah as divinely inspired. Consequently, a number of other core tenets of the Pharisees' belief system (which became the basis for modern Judaism), were also dismissed by the Sadducees. (The Samaritans practiced a similar religion, which is traditionally considered separate from Judaism.)
Hasidic Judaism
The Bobover dynasty, founded 1881 in Bobowa, West Galicia, constitutes some 4,500 households in total and has undergone a bitter succession strife since 2005, eventually forming the "Bobov" (3,000 households) and "Bobov-45" (1,500 households) sects. Sanz-Klausenburg, divided into a New York and Israeli branches, presides over 3,800 households. The Skver sect, established in 1848 in Skvyra near Kiev, constitutes 3,300. The Shomer Emunim dynasties, originating in Jerusalem during the 1920s and known for their unique style of dressing imitating that of the Old Yishuv, have over 3,000 families, almost all in the larger "courts" of Toldos Aharon and Toldos Avraham Yitzchak. Karlin Stolin, which rose already in the 1760s in a quarter of Pinsk, encompasses 2,200 families.