TerminusDB

Web · Linux · Self-hosted · API

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

TerminusDB is ranked #15 of 37 in graph databases on Freedom251. It runs on API, Linux, Self-hosted, Web. There is a free plan.

TerminusDB plans and pricing

All plans

TerminusDB Open Source Community Version Free Apache 2.0 licensed · run on your own computer terminusdb.org · 3 Oct 2026

Compared on graph databases

Free plan: Yes

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The record

Product: TerminusDB is an open-source document graph database that stores JSON documents in a schema-enforced graph and includes Git-like version control.
Version control: It supports branching, diffing, merging, cloning, synchronization, and time-travel operations over data.
Transactions: The documentation says commits are ACID transactions and schema validation is enforced on every write.
Query interfaces: TerminusDB provides an HTTP document API, GraphQL, and WOQL, a Datalog-based query language.
Integrations: Its GraphQL interface works with Apollo, urql, Relay, and other GraphQL clients; official client libraries are available for TypeScript/JavaScript and Python, with Rust also documented.
Security: TerminusDB provides role-based access control using users, roles, capabilities, and resource scopes.
Query security: The WOQL documentation says its typed AST design prevents query injection by construction, while noting that authentication, authorization, and business-logic vulnerabilities can still exist.
Deployment: The quickstart runs TerminusDB in Docker, and the documentation also describes building from source on Linux or macOS and running it on Kubernetes.
Cloud hosting: The official site identifies DFRNT as TerminusDB's hosting provider and describes cloud instances for getting started and collaborating.
Support: The official site directs users to the TerminusDB community on Discord and to GitHub for other ways to connect.
Intended users: The documentation describes TerminusDB as designed for developers and data engineers working with auditable data lineage, complex domain models, collaborative data workflows, or evolving structured content.
Notable limit: The comparison page says PostgreSQL is better suited to relational analytics, mature ORMs, and a very large extensions ecosystem.
Maintainer: The project documentation says DFRNT assumed stewardship in 2025 and maintains TerminusDB with the open-source community.
Price from: Free

Where it ranks on Freedom251

Best Graph Databases in 2026#15 of 37
Best Data Version Control Tools in 2026#16 of 36
Best Knowledge Graph Software in 2026#11 of 33

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Sources

terminusdb.org/docs/terminusdb-explanation/· checked 3 Oct 2026
terminusdb.org/docs/querying-terminusdb/· checked 3 Oct 2026
terminusdb.org/docs/access-control/· checked 3 Oct 2026
terminusdb.org/docs/woql-architecture/· checked 3 Oct 2026
terminusdb.org/docs/get-started/· checked 3 Oct 2026
terminusdb.org· checked 3 Oct 2026