AgentIndex icon
AgentIndex
compass logo
compass
★ 73
vs
ontosphere logo
ontosphere
★ 253

compass vs ontosphere

compass: Compass is a context engine that builds a temporal knowledge graph connecting entities, relationships, and documents across systems. It provides AI-native capabilities, hybrid search, impact analysis, and an open type system. It can be used to query and traverse organizational knowledge for humans and AI agents.; ontosphere: Ontosphere is a browser-based RDF/ontology knowledge graph editor that loads RDF from files, URLs, or SPARQL endpoints, allows users to author nodes and edges on a canvas, runs OWL 2 DL reasoning with visual differentiation of inferred triples, and supports multi-algorithm layout and AI-agent integration via the Model Context Protocol.

01

TL;DR

compass logo
compassRAG / Knowledge Base · ★ 73

Search across organizational systems for entities and relationships

Read compass full review →
ontosphere logo
ontosphereBrowser Automation · ★ 253

Building and maintaining knowledge graphs

Read ontosphere full review →
02

Side-by-Side Comparison

Field
compass logocompass
ontosphere logoontosphere
Category
RAG / Knowledge Base
Browser Automation
Stars
★ 73
★ 253
License
Apache-2.0
NOASSERTION
Install Command
git clone https://github.com/raystack/compass.git && cd compass && make
npm install && npm run dev
Updated
6mo ago
1w ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
ai-agents, context-engine, context-engineering
fair-data, graph-editor, json-ld
03

Features

compass logocompass
01AI-Native: Composable MCP tools for AI agent interaction
02Knowledge Graph: Typed, directed, temporal relationships
03Context Assembly: Multi-hop bidirectional traversal
04Impact Analysis: Blast radius analysis
05Hybrid Search: Keyword and semantic search
ontosphere logoontosphere
01Load RDF/Turtle/JSON-LD/RDF-XML/N-Triples from local files or remote URLs
02Author nodes and edges directly on the canvas with undo/redo
03Multi-algorithm layout (Dagre, ELK) with automatic clustering
04OWL 2 DL reasoning via Konclude with visual inferred triples
05Model Context Protocol (MCP) server for AI-agent integration
04

Use Cases

compass logocompass
↳Search across organizational systems for entities and relationships
↳Explore context and dependencies around any entity
↳Analyze impact of changes across systems
ontosphere logoontosphere
↳Building and maintaining knowledge graphs
↳Ontology reasoning and validation
↳AI-driven graph construction and editing
FAQ

FAQ

What is the difference between compass and ontosphere?
Both compass and ontosphere are in the RAG / Knowledge Base category. compass has 73 stars, while ontosphere has 253 stars.
Which is better, compass or ontosphere?
The best choice depends on your use case. Choose compass if Search across organizational systems for entities and relationships, and ontosphere if Building and maintaining knowledge graphs.
Is compass free or open source?
Yes, compass is open source on GitHub (Apache-2.0).
Is ontosphere free or open source?
Yes, ontosphere is open source on GitHub (NOASSERTION).
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Related

Alternatives to compass →Alternatives to ontosphere →compass details →ontosphere details →