ESON - EMF Simple Object Notation
ESON is a textual syntax for EMF models; like XMI is a XML-based syntax, ESON is a more human readable notation. It complements Xcore, which as a textual syntax for Ecore can define your EClass & Co.while ESON can represent their instances.
ESON is implemented based on Xtext, and *.eson files are thus truly textual representations; for example, changes made to your EObject are applied incrementally and preserve comments in or the formatting of the text. Crucially, users of ESON do *NOT* require any Xtext know-how or code generation for their Ecore models, because ESON is a fully dynamic.
How to use
ESON Editor UI
How to contribute
Src: http://git.eclipse.org/c/emf/org.eclipse.emf.eson.git/ ("Pull Requests" via Gerrit more than welcome!)
The Eclipse Installer (based on Oomph) is great to get it all set up.
Doc with linked demo videos: http://git.eclipse.org/c/emf/org.eclipse.emf.eson.git/plain/README.md
TBD Transfer, and update, old documentation from https://github.com/vorburger/efactory/blob/eclipse.org/org.eclipse.emf.eson.help/help/concepts.mediawiki