Best Open Source Alternatives to Adobe Acrobat Sign

Compare the best free and open-source alternatives to Adobe Acrobat Sign — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated August 2026 · 8 alternatives

Adobe Acrobat Sign

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Adobe Acrobat Sign alternatives compared

Open-source alternatives to Adobe Acrobat Sign, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Docuseal	18,170	MIT	LinuxmacOSWindowsDocker	Yes	Jul 2026	Visit
Signature Pad	11,992	MIT	Web	No	Jul 2026	Visit
OpenSign	6,749	AGPL-3.0	LinuxmacOSWindowsDocker	Yes	Jul 2026	Visit
Docassemble	972	MIT	LinuxmacOSWindowsDocker	Yes	Aug 2026	Visit
LibreSign	784	AGPL-3.0	LinuxmacOSWindowsDocker	Yes	Aug 2026	Visit
Autofirma	329	—	Linux	No	Jul 2026	Visit
DigiDoc4 Client	140	LGPL-2.1	Linux	No	Jul 2026	Visit
SignFlow	0	MIT	LinuxmacOSWindowsDocker	Yes	Jan 2025	Visit