Knowledge Engineering Start-ups logopeterindia.net
Knowledge Hub

Knowledge Engineering Start-up Companies

A directory of companies applying knowledge engineering — SQL-fluent knowledge graphs, ontology-driven databases, graph engines for AI and semantic reasoning platforms.

15 topics•4 categories•Updated October 2026

Semantic Layers & Ontology-driven Databases

4 entries

Knowledge graphs and typed data models.

01TimbrThe Timbr SQL Knowledge Graph platform bridges the gap between SQL-fluent databases and modern, relationship-rich, ontology-based semantic layers. 02TypeDB (formerly Grakn)A strongly-typed database with a polymorphic query language, TypeQL, built to organize complex networks of data and make it queryable — the evolution of the original Grakn knowledge graph engine. 03RelationalAIKnowledge-graph-based reasoning and decision intelligence on the data cloud. 04GraphwiseKnowledge graph and semantic AI platform; PoolParty now presents itself as part of the Graphwise platform.

Graph Engines for AI

3 entries

Graph databases aimed at AI and GraphRAG.

05MemgraphIn-memory graph engine positioned for AI context. 06FalkorDBGraph database with GraphRAG support. 07PuppyGraphQueries relational data as a graph without copying it.

Knowledge Extraction & Agent Memory

2 entries

Building knowledge structures from data and conversations.

08DiffbotExtracts structured knowledge from the web into a knowledge graph. 09CogneeOpen-source memory platform that structures data into knowledge for AI agents.

Related Pages

6 entries

Related directories on this site.

10Knowledge Graphs (KGs)Knowledge graph platforms and standards. 11Knowledge Graphs & Graph TechnologiesGraph databases, ontologies and GNNs. 12OntologiesOntology languages, editors and repositories. 13RDF Graph Databases & Semantic GraphsRDF stores and semantic graph databases. 14Graph DatabasesGraph database systems. 15Graph Data PlatformsGraph analytics and managed services.

Frequently Asked Questions

What is knowledge engineering?

Knowledge engineering is the discipline of capturing, structuring and representing knowledge, through ontologies, knowledge graphs and rules, so software can reason with it.

Which companies are listed?

Start-ups working on semantic layers, graph engines for AI and knowledge extraction, such as Timbr, TypeDB, RelationalAI, Memgraph and Cognee.

What is GraphRAG?

Retrieval-augmented generation that uses a knowledge graph to retrieve connected facts for a language model, rather than just similar text chunks.

How were companies chosen?

Each link was checked and the company is applying knowledge engineering techniques; listing is not an endorsement or a funding claim.

Where are the larger platforms?

See Knowledge Graphs, Semantic Graphs and Graph Databases for established vendors.