Use cases
Private note workflows Onnoir is built for.
These pages are written around real workflows: longer research sessions, local-first notes, searchable source files, encrypted desktop notebooks, and clean recovery paths.
Research library Private research library Use Onnoir as a private research library for notes, Cabinet source files, PDF and DOCX text search, OCR-readable PDFs, export, and recovery. Local-first notes Local-first notes Use Onnoir as a local-first notes app for private desktop writing, source-heavy research, export, and recovery. Encrypted notebook Encrypted desktop notebook Onnoir is an encrypted desktop notebook for private notes, longer research sessions, files, export, and recoverable local backups. No account required Private notes without an account Write private desktop notes without creating an account. Onnoir keeps the local app free, structured, exportable, and recoverable. Markdown export Markdown export notes Use Onnoir for rich private notes with readable Markdown export and encrypted .onbk backups for exact recovery.
Start with the free local app.
Available for macOS and Windows with no account required. Before updates, create and verify a recoverable backup.