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The Open Siddur Project is a volunteer-driven, non-profit, non-denominational, non-prescriptive, gratis & libre Open Access archive of contemplative praxes, liturgical readings, and Jewish prayer literature (historic and contemporary, familiar and obscure) composed in every era, region, and language Jews have ever prayed. Our goal is to provide a platform for sharing open-source resources, tools, and content for individuals and communities crafting their own prayerbook (siddur). Through this we hope to empower personal autonomy, preserve customs, and foster creativity in religious culture. If you like what you've found here, please help keep our project alive and online with your financial contribution.

ויהי נעם אדני אלהינו עלינו ומעשה ידינו כוננה עלינו ומעשה ידינו כוננהו "May the pleasantness of אדֹני our elo’ah be upon us; may our handiwork be established for us — our handiwork, may it be established."–Psalms 90:17

Len Fellman
Len Fellman

Len Fellman is a mathematician, educator, and innovator of "transtropilation," the process of translating from cantillized Hebrew, as closely as possible, “word for word and trope for trope”, with the main purpose being to aid a person with minimal Hebrew training in following the Hebrew leyning of the Torah and Haftarah readings word for word.


בסיעתא דארעא