Palantir Ontology alternatives

Proprietary operational ontology — semantic objects + kinetic actions wired to microservices. Not open-standards KG; closed platform. Full Palantir Ontology record →

  1. 1 TigerGraph Knowledge-graph platforms

    also in Knowledge-graph platforms · same storage (graph) · same retrieval (graph-traversal) · same memory unit (fact) · also self-hostable · also offered managed · also has MCP

    OSS ? Self-host ✓ Managed ✓ MCP ✓ Compare with Palantir Ontology →

  2. 2 AllegroGraph (Franz) Knowledge-graph platforms

    also in Knowledge-graph platforms · same storage (graph) · same retrieval (graph-traversal) · same memory unit (fact) · also self-hostable · also offered managed

    OSS ? Self-host ✓ Managed ✓ MCP ? Compare with Palantir Ontology →

  3. 3 Neo4j Knowledge-graph platforms

    also in Knowledge-graph platforms · same storage (graph) · same retrieval (graph-traversal) · same memory unit (fact) · also self-hostable · also offered managed · also has MCP

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 17k GPL-3.0 (Community Edition); Enterprise Edition… Compare with Palantir Ontology →

  4. 4 FalkorDB Knowledge-graph platforms

    also in Knowledge-graph platforms · same storage (graph) · same retrieval (graph-traversal) · same memory unit (fact) · also self-hostable · also offered managed · also has MCP

    OSS — Self-host ✓ Managed ✓ MCP ✓ ★ 11k SSPL-1.0 (source-available) Compare with Palantir Ontology →

  5. 5 Memgraph Knowledge-graph platforms

    also in Knowledge-graph platforms · same storage (graph) · same retrieval (graph-traversal) · same memory unit (fact) · also self-hostable · also offered managed · also has MCP

    OSS — Self-host ✓ Managed ✓ MCP ✓ ★ 4.4k BSL-1.1 (source-available, Community)… Compare with Palantir Ontology →

  6. 6 Ontotext GraphDB / Graphwise Knowledge-graph platforms ⚠ acquired — acquired by Oakley Capital

    also in Knowledge-graph platforms · same storage (graph) · same retrieval (graph-traversal) · same memory unit (fact) · also self-hostable · also offered managed · also has MCP

    OSS — Self-host ✓ Managed ✓ MCP ✓ proprietary; GraphDB Free (free-to-use… Compare with Palantir Ontology →

  7. 7 TopQuadrant TopBraid EDG (now TQ Data Foundation) Knowledge-graph platforms ⚠ renamed — now TQ Data Foundation

    also in Knowledge-graph platforms · same storage (graph) · same retrieval (graph-traversal) · same memory unit (fact) · also self-hostable · also offered managed · also has MCP

    OSS ? Self-host ✓ Managed ✓ MCP ✓ Compare with Palantir Ontology →

  8. 8 Dgraph Knowledge-graph platforms

    also in Knowledge-graph platforms · same storage (graph) · same retrieval (graph-traversal) · same memory unit (fact) · also self-hostable · also offered managed

    OSS ✓ Self-host ✓ Managed ✓ MCP ? ★ 22k Apache-2.0 Compare with Palantir Ontology →

Ranked by shared memory design (storage, retrieval, conflict handling, memory unit), same section and shared must-haves (open source, self-hosting, MCP), with adoption as a tie-breaker. ✓ confirmed · — no · ? not in the catalog yet. Want picks for your own requirements? Use the chooser. Checking a whole project? Check your stack.