Open eBook

Open eBook (OEB), or formally, the Open eBook Publication Structure (OEBPS), is a legacy e-book format which has been superseded by the EPUB format. It was "based primarily on technology developed by SoftBook Press". and on XML. OEB was released with a free version belonging to public domain and a full version to be used with or without DRM by the publishing industry.

Open eBook is a ZIP file plus a Manifest file. Inside the package a defined subset of XHTML may be used, along with CSS and Dublin Core metadata. The default file extension is .opf (OEB Package Format).

Specification release history

 * September 2007 – Open Publication Structure (OPS) 2.0, EPUB. Released, supersedes the OEBPS 1.2
 * August 2002 – OEBPS 1.2 Recommended Specification Released
 * June 2001 – OEBPS 1.0.1 replaces OEBPS 1.0
 * September 1999 – Open eBook Publication Structure (OEBPS) 1.0 released

Reader software

 * SoftBook
 * Adobe Digital Editions
 * FBReader – GPL e-book reader for Unix/Windows computers.
 * Lexcycle Stanza
 * Mobipocket
 * Openberg Lector – cross-platform reader released under the GPL and based on Mozilla platform

Reader devices

 * SoftBook
 * Sony Reader – the Sony Reader PRS-505 supports the EPUB file format.
 * Intel Reader
 * Barnes & Noble Nook
 * Kobo eReader