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)
W3C PROV-O Graph
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.