The Open Source Haggadah is a prototype for a software framework which would allow groups and individuals to compose their own prayer books online by compiling pre-written texts via a simple-to-use visual interface. The site allows registered visitors to build a Passover Haggadah for their own use. To do so, they can select scripture, translation, commentary, songs/readings, rituals, and/or illustrations for any or all of the fifteen sections of the Haggadah. Site users can also make their own contributions to any section of the Haggadah for the benefit of the other users.