Open-source alternatives to Dropbox Sign (October 2026)

Open-source alternatives to Dropbox Sign

Dropbox Sign does 4 jobs: send documents for signature, reusable signing templates, signing audit trail, signing API integrations. Most projects replace one or two of them, so pick the job you actually need.

Quick answer

Facts checked 15 Oct 2026

We track 3 open-source alternatives to Dropbox Sign, but none currently has confirmed commercial use, local running and no paid services together. Documenso and OpenSign cover all 4 Dropbox Sign jobs.

Documenso

documenso/documenso

★ 15k active today

Self-hostable document signing platform with signing order, reminders, templates, audit logs and an API; AGPL core plus paid Enterprise features.

Replaces Send documents for signature (partly)

Runs locally: Confirmed: Yes
Commercial use: Partial: Conditions · AGPL-3.0-only
Paid services: Partial: Optional only
Hardware: Confirmed: CPU works
Setup: Confirmed: Medium

Compare 8 of 8 facts sourced · checked 1d ago GitHub ↗ View details

DocuSeal

docusealco/docuseal

★ 19k active 4d ago

Self-hostable app to build PDF forms and have them filled and signed by multiple people, with email, API and webhooks; some features are paid Pro.

Replaces Send documents for signature + Signing API integrations (partly) Not: signing audit trail

Runs locally: Confirmed: Yes
Commercial use: Partial: Conditions · AGPL-3.0-only
Paid services: Partial: Optional only
Hardware: Unknown: Unknown
Setup: Confirmed: Medium

Compare 7 of 8 facts sourced · checked 1d ago GitHub ↗ View details

OpenSign

OpenSignLabs/OpenSign

★ 7.1k active today

Self-hostable PDF e-signing with multiple signers in sequence, OTP checks, templates, audit trail with completion certificate, and an API.

Replaces Send documents for signature + Reusable signing templates + Signing API integrations (partly)

Runs locally: Confirmed: Yes
Commercial use: Partial: Conditions · Custom licence
Paid services: Confirmed: None required
Hardware: Unknown: Unknown
Setup: Confirmed: Medium

Compare 7 of 8 facts sourced · checked 1d ago GitHub ↗ View details

No project meets all of your requirements. The list below shows what you'd need to relax.

Common questions about Dropbox Sign alternatives

Is there a free, open-source alternative to Dropbox Sign?

Yes. OpenSign, DocuSeal and Documenso are free to download and run on your own computer without paid API keys. OpenSign and Documenso cover every job we list for Dropbox Sign; the other covers only part of it, so check which job you need.

Can I do send documents for signature locally without a Dropbox Sign subscription?

Yes, with Documenso (AGPL-3.0-only), DocuSeal (AGPL-3.0-only) and OpenSign (Custom licence). Check the hardware notes and licence conditions on each page before you start.

Can I do reusable signing templates locally without a Dropbox Sign subscription?

Yes, with Documenso (AGPL-3.0-only), DocuSeal (AGPL-3.0-only) and OpenSign (Custom licence). Check the hardware notes and licence conditions on each page before you start.

Which Dropbox Sign alternatives can I use commercially?

With conditions: Documenso, DocuSeal and OpenSign. This is not legal advice; read each licence.

Does any open-source project replace all of Dropbox Sign?

Documenso and OpenSign cover every job we list for Dropbox Sign.