QuitStore (*Quads in Git*) supports collaborative Linked Data knowledge engineering

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The Quit Store (stands for Quads in Git) provides a workspace for distributed collaborative Linked Data knowledge engineering.
You are able to read and write RDF Datasets (aka. multiple Named Graphs) through a standard SPARQL 1.1 Query and Update interface.
To collaborate you can create multiple branches of the Dataset and share your repository with your collaborators as you know it from Git.

If you want to read more about the Quit Store we can recommend our paper:

Decentralized Collaborative Knowledge Management using Git
by Natanael Arndt, Patrick Naumann, Norman Radtke, Michael Martin, and Edgard Marx in Journal of Web Semantics, 2018
[@sciencedirect] [@arXiv]

Github repos