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Konclude
Konclude: A parallel, tableau-based, high-performance reasoner for the Description Logic SROIQV(D)/the Web Ontology Language (OWL) 2 DL
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qlever
Very fast SPARQL Engine, which can handle very large knowledge graphs like the complete Wikidata, offers context-sensitive autocompletion for SPARQL queries, and allows combination with text search. It's faster than engines like Blazegraph or Virtuoso, especially for queries involving large result sets.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Konclude: https://github.com/konclude/Konclude
Qlever wiki: https://github.com/ad-freiburg/qlever/wiki