ttl-mode is an Emacs mode for editing Turtle (RDF) files. It's based on the excellent start made by Hugh Haas in n3-mode http://larve.net/people/hugo/2003/scratchpad/NotationThreeEmacsMode.html
Here is a short overview and comparison of RDF querying with SPARQL and Jena which is presented as follows: 1. SPARQL; 2. SPARQL from inside Jena; 3. Explicit and implicit relations when querying with Jena 4.Querying remote SPARQL endpoitns
OntospyWeb is a tool made for navigating ontologies ('vocabularies') encoded using the RDF family of languages. It is based on the Ontospy Python library, which in turns wraps RDFLib.
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