Best Knowledge Graph Software in 2026
Updated
In short: RDFox is ranked #1 of 33 as of 4 October 2026, ahead of Neo4j and AllegroGraph. The best-ranked option with a free plan is Neo4j. The lowest first paid tier on this page is TypeDB at $0.07/mo.
To work with data as connected entities and relationships, knowledge graph software offers options for modeling, querying and exploring those connections. Compare ontology modeling and graph visualization with import formats, deployment choices, and support for RDF/SPARQL. Query languages and semantic reasoning are also part of the comparison, while free-plan availability and paid-from pricing provide cost details to weigh. The entries include RDFox, Neo4j and AllegroGraph, alongside GraphDB and TypeDB. Think about the formats your data uses, the modeling approach you need, and how you plan to query or inspect a graph when comparing the listed capabilities.
33 knowledge graph software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Knowledge Graph Software, ranked on how quickly a newcomer can get going. 18 of the 25 on this page can be tried for free.
- 1 RDFoxFree plan
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: yes
- 2 Neo4jPaid from $65/mo
- Free to practise on: yes
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 3 AllegroGraphFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 4 GraphDBFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 5 RDF StudioFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 6 TypeDBPaid from $0.07/mo
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 7 StardogFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 8 Virtuoso Universal Server
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: yes
- 9 Apache Jena FusekiFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 10 LinkedDataHubFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 11 ProtégéFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 12 TerminusDBFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 13 Eclipse RDF4JFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 14 MendixFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 15 Progress Semaphore
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: yes
- 16 Timbr
- Free to practise on: not on record
- Free trial: yes
- Well documented: yes
- Runs where you work: not on record
- 17 OWLGrEdFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 18 Ontop
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: yes
- 19 HASHPaid from $1.67/mo
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 20 PoolParty Semantic Suite
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 21 d.AP
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 22 Fluent Editor
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 23 Mondeca
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 24 Ontotext Platform
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 25 Qlevia Enterprise RDF Graph Platform
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which knowledge graph software is ranked first on The Geeks Club?
RDFox is ranked #1 of 33 with a score of 8.0. Neo4j is second and AllegroGraph third.
How many of these have a free plan?
15 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, TypeDB has the lowest first paid tier we found: $0.07/mo.
How is this list ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on. Paid placements never change a rank.