halacha

New website and API for TorahCalc - Tools for Torah study

TypeScript library for calculating Jewish halachic times (zmanim) — sunrise, Shema, Mincha, Shabbat entry/exit and more.

Fast, reliable Rust APIs for solar position and Jewish Zmanim calculations from any date and location.

Formal symbolic reasoning system for computational halacha using Kripke semantics and Answer Set Programming

Sh'elah (שאלה — "question") is a full-stack web application for Jewish text study, halachic inquiry, and daily practice. It integrates the Sefaria text library, community customs datasets, prayer resources, zmanim, and a multi-model AI layer to answer halachic questions with source citations in the user's community tradition.

The Halachipedia Android App

A portable talmud Agent Skill for Claude, Codex, and compatible AI systems. Works for Daf Yomi. Explains sugyot, Rashi, Tosafot, halacha, Aramaic, key takeaways, review questions, catch-up ranges, with source grounding from Sefaria and dates from Hebcal. No API keys or MCP required.

Multi-tenant Android app + home-screen widgets for any shul: minyanim, shiurim, zmanim, Shabbos times, and weather. One APK serves every shul on the registry. Jetpack Glance + Compose, Supabase, KosherJava.

An abridged set of Jewish laws in English

A command-line tool for computing Jewish zmanim, powered by rust-zmanim

A LaTeX quick reference to Jewish law as it pertains to liturgy, focusing on issues that require immediate resolution.