onot

onot generates open source software notices (OSS Notice) from SBOM documents. It reads SPDX 2.x (JSON/YAML/Tag-Value/RDF), CycloneDX (JSON/XML), and Excel, and produces HTML, Text, Markdown, and PDF notices. License texts are bundled, so it runs fully offline (air-gapped) — your SBOM never leaves the machine. Jointly developed by Kakao and SK telecom.

User guide: English

Download (desktop app)

No setup required. Grab the latest installer from Releases, open the app, and drop in an SBOM file to preview and download a notice — Windows (onot-Setup-x.y.z.exe) and macOS (.dmg).

The installers are unsigned. On first launch Windows SmartScreen may warn about an "unknown publisher" — choose More info → Run anyway. On macOS, right-click the app and choose Open to pass Gatekeeper.

CLI

pip install "onot[spdx,cyclonedx,excel,api]"   # from PyPI; add ,pdf for PDF output

# SBOM (format auto-detected) → notices in multiple formats
onot generate -i sbom.spdx.json -f html -f markdown --output-dir ./output

#   -f/--format   html | text | markdown | pdf (repeatable)
#   --lang        ko | en
#   --config      onot.yaml (company info, etc.)
#   --online      fetch missing license texts remotely (offline by default)
#   --stdout      write a single text format to stdout

onot formats   # supported output formats
onot version

Input format is auto-detected by extension and content (including SPDX JSON vs. CycloneDX JSON). PDF output needs pip install ".[pdf]" (WeasyPrint); the desktop app uses a built-in converter.

Local API (sidecar)

onot-sidecar --port 8765
# POST /api/parse    upload → parse result
# POST /api/render   upload + format/lang/company → notice
# GET  /api/formats, GET /healthz

Desktop app (Electron)

pnpm -C frontend install && pnpm -C frontend build
pnpm -C electron install && pnpm -C electron start   # dev
pnpm -C electron run dist                            # package (.dmg/.exe/.AppImage)

Upload → preview → download. All processing is local; the SBOM never leaves the machine.

Development

bash .claude/gate.sh   # lint + pytest (cov ≥ 90) + frontend build/test + electron sidecar test

Refresh license data with python scripts/update_license_data.py (bundles SPDX license-list-data). Design and decision records live in docs/2.0/ (TRACEABILITY.md, DECISIONS.md).

Contributing

Contributions are welcome! See CONTRIBUTING.md for how to set up your environment, run the checks, and open a pull request. Please also read our Code of Conduct. To report a security vulnerability, follow SECURITY.md instead of opening a public issue.

Maintainers

Name	Company	Email
Rogers	Kakao	um4825@gmail.com
Haksung	SK telecom	hakssung@gmail.com

License

Apache-2.0