OpenSign OpenSignLabs/OpenSign

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

Creator kit + Compare GitHub ↗ Install guide (official) ↗

OpenSign at a glance

Checked 15 Oct 2026

OpenSign (v2.41.3, 21 Aug 2026; commits ongoing) is a web app self-hosted with Docker Compose and MongoDB. It handles multiple signers with optional enforced sequence, email OTP for guest signers, expiry, rejection, reminders, templates, an audit trail with completion certificate and an API. Most code is AGPL-3.0, but one server directory (cloud/customRoute) is carved out to a separate licence that the repo does not include. A hosted cloud version exists.

Cite this pageRepoQuarry. “OpenSign.” Checked 15 Oct 2026. https://repoquarry.dev/projects/opensign

How much of DocuSign does it replace?

5 of 6 jobs. Covers sending, sequential signing, reminders, templates, audit trail and API; feature parity not checked.

Send documents for signature Partial replacement

Signing order and reminders Partial replacement

Audit trail and completion certificate Partial replacement

Reusable signing templates Partial replacement

eSignature API and embedded signing Partial replacement

Certificate-based digital signatures (PKI) Not covered

For certificate-based digital signatures (PKI), see other DocuSign alternatives. You may also need to build an interface, an API server and hosting yourself.

How much of Dropbox Sign does it replace?

3 of 4 jobs. PDF signing, reusable templates and API access cover signature workflows; document authoring, sales quotes and complete contract administration are not covered.

Send documents for signature Partial replacement

Reusable signing templates Partial replacement

Signing audit trail Not covered

Signing API integrations Partial replacement

How much of PandaDoc does it replace?

3 of 4 jobs. PDF signing, reusable templates and API access cover signature workflows; document authoring, sales quotes and complete contract administration are not covered.

Send documents for signature Partial replacement

Reusable signing templates Partial replacement

Signing audit trail Not covered

Signing API integrations Partial replacement

Facts, with sources

Every answer links to where we found it. We read the documentation; we did not install it.

Report a correction

QuestionAnswerSourceChecked

Runs on my machine? Yes, self-hosted with Docker Compose; free cloud-hosted version also offered The simplest way to install OpenSign on your own server is using official docker images github.com · OpenSign#docker ↗ 1d ago

Code licence AGPL-3.0, except apps/OpenSignServer/cloud/customRoute, whose separate licence is not present in the repo All content that resides under the "apps/OpenSignServer/cloud/customRoute" directory of this repository, if that directory exists, is licensed under the license defined in "apps/OpenSignServer/cloud/customRoute". github.com · LICENSE ↗ 1d ago

Model weights licence No separate model weights github.com · OpenSign#readme ↗ 1d ago

Commercial use AGPL-3.0 copyleft for most code; licence of the customRoute directory is unclear Content outside of the above mentioned directories or restrictions above is available under the "GNU AFFERO GENERAL PUBLIC LICENSE" github.com · LICENSE ↗ 1d ago

Paid services needed? None required for self-hosting; README describes a free cloud-hosted version Now sign unlimited documents even on the cloud hosted free version of OpenSign. github.com · OpenSign#features ↗ 1d ago

Hardware Not documented in the README or Docker guide Know the answer? —

Operating systems Docker on Linux, macOS or Windows (documented install commands for each) Steps to run OpenSign™ with docker on Linux/MacOS/Windows docs.opensignlabs.com · run-locally ↗ 1d ago

Setup effort Medium; Docker Compose with Caddy; default MongoDB is not persistent until you supply your own The default MongoDB instance used in deployment is not persistant and will be cleared on every restart. github.com · OpenSign#deploy ↗ 1d ago