AllegroGraph vs Apache Jena Fuseki

AllegroGraph is a persistent graph database for RDF triples and quads, generic graphs, and vectors, using disk-based storage and efficient memory utilization. It supports SPARQL, RDFS++ reasoning, and Prolog, plus geospatial and temporal reasoning, social network analysis, native data types, and range queries. The database is ACID-compliant and includes online backups, point-in-time recovery, replication, and warm standby. It can integrate with large language models and store embedding vectors in a vector database. Security features include role-based permissions, repository access controls, security filters, and triple-level controls using attributes. LDAP and OAuth/OIDC authentication are supported, with TLS for client connections; the security overview recommends third-party tools for encryption at rest. Clients include Java, Python, and Lisp, alongside REST and browser-based WebView access. The server runs natively on x86-64 Linux, with documented Docker, Windows Subsystem for Linux, virtual machine, and cloud options. The free edition costs nothing, has no expiration or license key requirement, and allows up to 5,000,000 triples.

Apache Jena Fuseki is a SPARQL server that can run independently or as part of an application. It provides SPARQL 1.1 query and update protocols and the SPARQL Graph Store protocol. Fuseki integrates with TDB for transactional persistent storage and includes Jena text query. It can run as a standalone server, an operating-system service, an embedded component, or a web application in Apache Tomcat or Jetty. The project offers a plain server without a UI, and distributions include a ZIP with server and UI, Maven artifacts, and a WAR file. A project kit can build Docker or Docker Compose containers; databases need mounted volumes to survive container removal. The web application uses Apache Shiro, with access control at server, dataset, endpoint, and graph levels. Graph-level controls currently apply only to read-only datasets. By default, administrative functions are limited to localhost, while SPARQL endpoints are open. Fuseki is free, self-hosted software under Apache License 2.0.