δ
ontodrift know exactly what changed, what broke, and what is silently drifting.
ONTOLOGY A (BASE VERSION) Original
Drag & drop or browse file
OWL, RDF/XML, Turtle, or OBO
ONTOLOGY B (COMPARE VERSION) Modified
Drag & drop or browse file
OWL, RDF/XML, Turtle, or OBO
Semantic Reasoner
Checking server environment...
RDF parser engine
AI Copilot (Gemini Explanations)
Comparison Failed
An unexpected error occurred. Please try again.

Analyzing Ontologies

Parsing and validating OWL files...
Normalising RDF triples & Weisfeiler-Lehman blank nodes...
Running structural & semantic diff engine...
Classifying axiomatic impact & generating report...

Observability Report

Generated 10 seconds ago • reasoner: none
0% Drift
Minimal Drift
Breaking
0 Inferences lost or unsatisfiable
Narrowing
0 Tighter logical restrictions
Broadening
0 Loosened logical definitions
Annotations
0 Labels, comments & definitions
No changes found
Both versions are semantically identical under this configuration. No drift has occurred.