Stirling-PDF vs Acrobat (2026): Toolbox or PDF Suite?

forkalt identification graphic for Stirling-PDF with license and star snapshot — forkalt identification graphic (2026-10-21). Source · License: forkalt original.

forkalt Acrobat-class job graphic listing Stirling-PDF, PDF Arranger, and Okular — forkalt comparison graphic (2026-10-21). Source · License: forkalt original.

Verdict. Choose Stirling-PDF v3.2.0 if you want a self-hosted PDF toolbox whose core is MIT outside named proprietary directories. Choose Adobe Acrobat if you want the commercial PDF suite. Choose PDF Arranger for desktop page shuffle, or Okular to read and annotate. We have no sourced forms, e-sign, or OCR bake-off.

Compare Stirling-PDF and Adobe Acrobat.

Dimension	Stirling-PDF	Adobe Acrobat	Source
License	MIT core; named proprietary/SaaS/engine/desktop/cloud/portal dirs carved out (open-core)	Proprietary (Adobe General Terms of Use)	Stirling-PDF LICENSE (2026-10-21); adobe.com/legal/terms.html
Price (software)	free self-host of the MIT core; proprietary dirs and hosted SKUs are separate	paid Acrobat SKU (price not copied here)	LICENSE / Adobe Acrobat page
Current release (this check)	v3.2.0 (GitHub, 2026-10-15)	Acrobat SKU; version string not copied from Adobe’s marketing page	GitHub Releases Stirling-Tools/Stirling-PDF; adobe.com/acrobat.html
Community snapshot (2026-10-22)	94,686 stars / 11,383 forks; last push 2026-10-22	Not a public GitHub product in this check	GitHub API Stirling-Tools/Stirling-PDF
Job (project positioning)	Self-hosted multi-tool PDF app (browser toolbox)	Commercial PDF suite (view, edit, sign SKUs — not independently listed)	Stirling-PDF README / GitHub; adobe.com/acrobat.html
GitHub license field	NOASSERTION (we copy the LICENSE file, not the API badge)	n/a	GitHub API / LICENSE
Quality vs Acrobat Pro	Not independently tested	Not independently tested	n/a

When to choose which

Self-hosted browser toolbox this week: Stirling-PDF — v3.2.0. Read the LICENSE carve-outs before offering it as a service. We did not run Docker.
Paid commercial PDF suite: Adobe Acrobat — That is the commercial product. Not a quality score.
Desktop merge / split / rotate / crop: PDF Arranger — GPL-3.0 page shuffler (1.14.0). Different job from a forms suite.
Read and annotate, not rebuild pages: Okular — KDE viewer. Canonical git invent.kde.org/graphics/okular.

Read the entity pages: Stirling-PDF and Adobe Acrobat (identification only). Hub: Adobe Acrobat alternatives. Related rows: PDF Arranger, Okular.

Stirling-PDF vs Adobe Acrobat at a glance

Stirling-PDF is a self-hosted PDF toolbox. Stirling-Tools/Stirling-PDF on 2026-10-22: 94,686 stars / 11,383 forks, last push 2026-10-22, latest release v3.2.0 (2026-10-15). Root LICENSE is MIT outside named proprietary/SaaS directories. GitHub’s license field is NOASSERTION. We copy the file and call it open-core.

Adobe Acrobat is a commercial PDF suite. Identification: Adobe Acrobat. Marketing host opened 2026-10-22: adobe.com/acrobat. We did not copy a price or an Acrobat Pro feature matrix.

Star count is not quality. Open-core is not “fully MIT.”

When to pick each

Need a browser toolbox you can self-host: Stirling-PDF v3.2.0. Read the LICENSE carve-outs first.
Need the commercial suite: Adobe Acrobat.
Need merge / split / rotate / crop on a desktop: PDF Arranger 1.14.0.
Need to read and annotate: Okular.
Need a word processor: Microsoft Word alternatives.

FAQ

Stirling-PDF vs Adobe Acrobat — is Stirling-PDF fully MIT?

The root LICENSE (opened 2026-10-21) is MIT for content outside named proprietary, SaaS, engine, desktop, cloud, and portal directories. GitHub’s license field is NOASSERTION. We list it as open-core. Not legal advice.

Can it replace Acrobat Pro forms, e-sign, and OCR?

We did not independently test forms, certificates, or OCR against Acrobat Pro. Stirling-PDF’s README describes a multi-tool PDF app; proprietary directories are out of the MIT grant.

What version did you check?

v3.2.0 (GitHub, 2026-10-15). API 2026-10-22: 94,686 stars, last push 2026-10-22. Homepage stirling.com.

Should I pick PDF Arranger or Okular instead?

PDF Arranger is page-level shuffle. Okular is a viewer with annotations. See Adobe Acrobat alternatives.

Sources & verification

Last verified 2026-10-22 · Last updated 2026-10-22· Edited by forkalt editors · Editorial policy

License notes are not legal advice. Read the original LICENSE. Trademark & disclaimer.