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Stirling PDF vs Gotenberg: catalog facts
Stirling PDF	Gotenberg
Freemium Free plan is $0/month with no card required (60+ tools, web/desktop/self-hosted, 500…	Free Free and open source under the MIT licence.
Windows, macOS, Linux, Web, Self-hosted	Self-hosted
55+ PDF tools covering signing, converting, merging, editing, OCR and redaction, chained in a stateful workspace with… Runs on Docker, bare metal, Kubernetes or as native desktop apps for Windows, macOS and Linux	Chromium and LibreOffice bundled in one container Converts 100+ office formats as well as HTML and Markdown
Open-core: SSO, external database, Google Drive integration, SAML and audit logs are gated behind paid Team or… Manual server setup needs Java 25+ plus LibreOffice and Tesseract for conversions and OCR	API only, with no graphical interface Requires Docker and some developer knowledge
Self-hosted, Downloadable app, Web application, Hosted service	Self-hosted
Open source	Open source
License: MIT	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.