www.dafyomi.co.il
Kollel Iyun Hadaf’s amazing Dafyomi site – thousands of pages of study material on the entire Shas, including “Point-By-Point” Review of the daf in English, halacha on the daf, charts, review questions, a daily quiz, and more.
https://torahcalc.com/
Collection of tools and calculators for Jewish life and Torah study, including: a biblical unit converter to convert between talmudic distance, area, volume, weight, and monetary units and find out their equivalent using modern units; a gematria calculator that calculates the gematria using 25 different methods; and many calculations based on the Hebrew calendar such as holidays, leap years, and the molad.
www.jewishyear.com
Perpetual Online Jewish Calendar
www.gottorah.com
Find and learn with a study partner. A Project of Oorah.
Online minyan and shiur locator. Find a minyan or shiur in any location.
http://www.eruv.org/
Global Directory of Eruvim