Best Open Source Alternatives to OneSpan Sign

Compare the best free and open-source alternatives to OneSpan 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 · 6 alternatives

OneSpan Sign

Proprietary SaaS

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Platformsweb, mobile, android, ios

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OneSpan Sign alternatives compared

Open-source alternatives to OneSpan 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
SignFlow	0	MIT	LinuxmacOSWindowsDocker	Yes	Jan 2025	Visit