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## Related languages and technologies  * [Research Object](http://www.researchobject.org/)  * [JSON-LD](http://json-ld.org/)  * [Open Annotation data model](http://openannotation.org/spec/core/)  * [W3C Web Annotation Data Model](http://www.w3.org/TR/annotation-model/)  * [ePub OCF format](http://idpf.org/epub/30/spec/epub30-ocf-20111011.html)  * [ODF bundle](https://researchobject.github.io/specifications/bundle/)  * [Adobe UCF](https://wikidocs.adobe.com/wiki/display/PDFNAV/Universal+Container+Format)  * .. not in cronological order :)