Your Ontologies.
Versioned. Visualized. Ready for AI.
The first hub where anyone (not just engineers) can create, version, and share ontologies that LLMs can actually use.
1,000 versions included. No credit card required.
Ontologies are powerful.
Managing them is a nightmare.
You've got domain knowledge trapped in your head, scattered across Protégé files, or buried in a GitHub repo that only two engineers can touch.
Your AI features hallucinate because there's no source of truth
Business users can't access or update the ontology without an engineer
When something changes, nobody knows what changed, when, or why
You're stuck choosing between "academic tool nobody uses" and "build it yourself"
Schema.org is for academics. GitHub is for engineers. Neither is for your team.
One place for your ontologies.
Accessible to everyone.
Syntaxia Anchor is where your ontologies live, evolve, and connect to everything else.
Upload any format. Version every change. Share with your team or the world. Let your LLMs query it directly.
No PhD required.
Everything you need. Nothing you don't.
Upload Any Format
OWL, RDF, SKOS, JSON-LD, YAML, Turtle. Bring what you have. We'll handle it.
Version Everything
Every change tracked. Every version accessible. Fork it, branch it, roll it back. Like Git, but for people who don't want to learn Git.
Public or Private
Share internally with your team. Publish to the world. Your choice, per ontology.
Visualize Your Knowledge
See your ontology as a graph. Spot gaps. Understand relationships. No more staring at XML.
MCP Server for LLMs
Your AI agents query your ontology directly. One source of truth. Zero hallucinations about your domain.
Built for Humans
Beautiful UI. No command line. No Protégé. Your business analysts can use this.
If this sounds like you, you're in the right place.
Consultants
Who build AI solutions and need a clean way to define and share domain models with clients
Data Teams
Who want one source of truth that isn't a dusty wiki page
AI Engineers
Who are tired of their LLMs making up terminology
Hobbyists
Who want to explore and publish ontologies without the academic overhead
Three steps. Three minutes.
Upload or Create
Bring your existing ontology or start fresh
Version and Share
Track changes, invite collaborators, set visibility
Connect
Point your LLM at your MCP endpoint. Done.
Simple pricing. No surprises.
Start free with 1,000 versions. No time limit. No credit card.
Get started with 1,000 free versions. That's enough for most projects, forever.
If you'd like to keep using Anchor past 1,000 versions, it's only $20/month for unlimited versions and unlimited users.
Cancel anytime. No risk.
- All formats (OWL, RDF, SKOS, JSON-LD, YAML, Turtle)
- Public and private ontologies
- Full visualization
- MCP server access
- Unlimited users
No per-seat pricing. No usage surprises. No enterprise sales calls.
Questions? We've got answers.
"Why not just use GitHub?"
You can. If everyone on your team knows Git, enjoys writing RDF by hand, and doesn't need visualization or LLM integration. For everyone else, there's Anchor.
"Why not Protégé?"
Protégé is a powerful desktop tool built for ontology researchers. It's not built for teams, versioning, sharing, or AI integration. Different tools, different jobs.
"We have something internal already."
Great. How's the versioning? The visualization? Can your LLMs query it? Can your business team update it without filing a ticket? If you hesitated on any of those, we should talk.
"Is this just for enterprises?"
No. Hobbyists, solo consultants, and small teams use Anchor. The free tier is real. 1,000 versions covers most projects indefinitely.
Your domain knowledge deserves better than a file in a folder.
Create your first ontology in less than 3 minutes. Free.