Speedy is actively maintained by Triply and is standards conformant, always available and always up-to-date.

Type
Speedy
Status
Running
Protocol
SPARQL
Statements
28.773
Up-to-date
Always

Jena is standards-conforming and can apply RDFS/OWL reasoning, but does not scale very well to larger datasets.

Type
Jena
Reasoner
None
Status
Running
Protocol
SPARQL
Created
4 months ago
Loaded
4 months ago
Up-to-date
Loaded statements
28.773
Loaded graphs
2 / 2

Virtuoso does not follow the SPARQL standard well, but is able to scale to large datasets, and has support for geospatial queries.

Type
Virtuoso
Status
Running
Protocol
SPARQL
Created
4 months ago
Loaded
4 months ago
Up-to-date
Loaded statements
28.773
Loaded graphs
2 / 2