Current RDFJS implementations?

The one some of us are using is :

https://github.com/linkeddata/rdflib.js

I've collected a few more:

https://github.com/linkeddata/rdflib.js/wiki/Other-Implementations

<https://github.com/linkeddata/rdflib.js/wiki/Other-Implementations#rdfquery>
rdfquery

rdfQuery is an easy-to-use Javascript library for RDF-related processing.
You can use it to parse RDFa embedded within your page, query over the
facts it contains, and reason to produce more facts. In concert with an
server-side triplestore, rdfQuery can be used to create interfaces for
editing the semantic web.

http://code.google.com/p/rdfquery/

<https://github.com/linkeddata/rdflib.js/wiki/Other-Implementations#rdfstore-js>
rdfstore-js

rdfstore-js is a pure Javascript implementation of a RDF graph store with
support for the SPARQL query and data manipulation language.

https://github.com/antoniogarrote/rdfstore-js

<https://github.com/linkeddata/rdflib.js/wiki/Other-Implementations#rdf-interfaces>
rdf-interfaces

The RDF Interfaces Specification defines a set of standardized interfaces
for working with RDF data in a programming environment.

This is an ECMAScript-262 V5 (Javascript) implementation of those
interfaces, by the specification editor.

https://github.com/webr3/rdf-interfaces

<https://github.com/linkeddata/rdflib.js/wiki/Other-Implementations#js-rdf-api-prototype>JS
RDF API Prototype

This library provides access to the next revision of the RDFa API
Interfaces, it's not a full implementation yet (the Document Extentions for
RDFa documents and PropertyGroup functionality is missing), however it does
provide access to all RDF and Data Interfaces from the next editors draft,
this library will be aligned with the RDFa API regardless of issue/proposal
outcomes from the next editors draft onwards, so will/may be subject to
change.

http://webr3.org/apps/play/api/lib