Semantics Toolkit. Auto-SPARQL-query generation. Drag-and-drop ingestion.
SemTK is currently optimized to run over Apache Jena Fuseki, but also runs over these triplestores
Full info is in the wiki including instructions on installing
Check out this quick-and-easy docker demo, courtesy of the RACK project. There are a variety of installation and demo options listed in the RACK wiki
RACK is an active opensource Verification and Validation tool being developed on the DARPA ARCOS program. SemTK is a key piece of its architecture, and is being continuously improved to serve the RACK project.