Tentris
Tentris is a database for storing and querying RDF knowledge graphs, with support for SPARQL 1.1.
What Tentris is
Tentris is a database for storing and querying RDF knowledge graphs, with support for SPARQL 1.1. It keeps RDF graphs in a compressed Hypertrie index intended to reduce memory use. Its query engine uses adaptive planning and worst-case optimal joins, streams results, and avoids materializing intermediate results. Tentris describes itself as RDF 1.1 and SPARQL 1.1 compliant, so switching does not require changing an existing RDF data model. It is also presented as a knowledge layer for GraphRAG, AI agents, and semantic applications that need deterministic retrieval across connected information. The free Community plan costs nothing and includes a single-core license, in-memory storage, transactions, and community support. Its non-commercial license covers private, academic, educational, scientific, evaluation, or research use, but excludes production and revenue-generating use; the EULA says there is no support or maintenance for that software. Commercial licensing is annual, per CPU core starting at 12 cores, with a 60-day trial license. A cloud plan for Azure, AWS, and Google Cloud is marked coming soon. Install options include Linux, macOS, Docker, and Python, with x86-64 and ARM AARCH64 platforms listed.
Good
- Supports RDF 1.1 and SPARQL 1.1.
- Compressed index is designed to reduce memory use.
- Streams query results without materializing intermediates.
- Runs on Linux, macOS, Docker, and Python.
- Data stays within the licensee’s infrastructure.
Watch out
- Community license excludes production and revenue-generating use.
- No support or maintenance for non-commercial software.
- Commercial licensing starts at 12 CPU cores.
- Cloud offering is marked coming soon.
Who it suits
The free Community plan is aimed at developers, students, and researchers working on non-commercial projects. Commercial users needing production use can consider its Commercial plan, while the Cloud offering is not yet available.
Verdict
Tentris offers standards-based RDF graph storage and query execution, with a free non-commercial plan and a separate commercial license. Check the Community license restrictions and support terms before using it for production work.
Plans and prices
From Tentris's own pricing page, checked 3 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Community | Free | Single-core license · In-memory storage · Community support · SPARQL 1.1 and RDF 1.1 support · Transactions |
| Cloud | Priced on request | Coming soon · Azure, AWS and Google Cloud · Daily backups · Configurable retention · On-demand scaling · SLA agreement · Pay per Use |
| Commercial | — | Licensed per CPU core, starting at 12 cores · Persistent storage · ACID transactions · Optional commercial SLA · 60-day trial license · Annual |
The facts
Each one read from Tentris's own pages, with the date it was checked.
What it does
- AI use
- Tentris is presented as a knowledge layer for GraphRAG, AI agents, and semantic applications, with deterministic retrieval over connected knowledge.checked 3 Oct 2026
- Audience
- The free Community plan is described for developers, students, and researchers; the Commercial plan is described for data sovereignty and strict compliance.checked 3 Oct 2026
- Benchmarks
- Tentris says its published benchmark figures link to reproducible datasets, queries, hardware, and methods.checked 3 Oct 2026
- Cloud providers
- The planned cloud offering is listed for Azure, AWS, and Google Cloud and is marked coming soon.checked 3 Oct 2026
- Data handling
- The EULA says the downloadable software runs within the licensee’s infrastructure and Tentris does not host, receive, or otherwise access its content.checked 3 Oct 2026
- Indexing
- It stores RDF graphs in a single compressed Hypertrie index designed to reduce memory use.checked 3 Oct 2026
- Install options
- The site lists Linux, macOS, Docker, and Python installation options and x86-64 and ARM AARCH64 platforms.checked 3 Oct 2026
- Product
- Tentris stores and queries RDF knowledge graphs and supports SPARQL 1.1.checked 3 Oct 2026
- Query execution
- Tentris uses adaptive query planning and worst-case optimal joins, streams results, and avoids materializing intermediate results.checked 3 Oct 2026
- Standards
- The site describes Tentris as RDF 1.1 and SPARQL 1.1 compliant, with no need to change an existing RDF data model to switch.checked 3 Oct 2026
- Support
- The Community plan includes community support; the EULA states Tentris provides no support or maintenance for the non-commercial software.checked 3 Oct 2026
The company
- Company
- Tentris says the database grew from more than a decade of research at Paderborn University and lists Germany as where it builds the product.checked 3 Oct 2026
- Headquarters
- Tentris GmbH lists its address as Obernstraße 50, 33602 Bielefeld, Germany.checked 3 Oct 2026
Money
- Free license limits
- The EULA defines the non-commercial version for private, academic, educational, scientific, evaluation, or research use and excludes production and revenue-generating use.checked 3 Oct 2026
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