# OpenSign

> Open-source PDF signing with unlimited free signatures

OpenSign is an open-source e-signature app for signing PDFs yourself and requesting signatures from others, with templates, signing order, document expiry and a completion certificate for each signed file. Both the free cloud plan and the free self-hosted version allow unlimited signatures. Paid plans add API access, webhooks, field validations, bulk sending and team features.

- **Category:** E-Signatures & Proposals
- **Made by:** OpenSignLabs
- **Website:** https://www.opensignlabs.com
- **Runs on:** Web
- **Facts last checked:** Oct 17, 2026

## Pricing

OpenSign has a free plan. Paid plans start at $9.99 per month, billed yearly ($29.99 billed monthly).

- **Pricing model:** Free plan
- **Free plan:** OpenSign Free (cloud): unlimited signatures and templates, signing order, completion certificates, Dropbox import and email notifications.
- **Free trial:** None listed.

| Plan | Price | What you get |
| --- | --- | --- |
| OpenSign Free | $0 | Hosted: unlimited digital signatures and templates, 14 field types, signing order, completion certificates and public profiles. |
| OpenSign Professional | $9.99 per month, billed yearly ($29.99 billed monthly) | Field validations, webhooks, Zapier, API access, auto reminders, embedded signing and 240 premium credits a year. |
| OpenSign Teams | $19.99 per user / month, billed yearly ($39.99 billed monthly) | Adds teams and organizations, shared templates, your own cloud storage and 500 premium credits a year. |
| OpenSign Enterprise | Custom | Price on request: custom domain, custom branding, an uptime SLA, SSO and priority support. |
| OpenSign Self-Hosted | $0 | The open-source version you host yourself from GitHub, with unlimited signatures and templates. |
| Teams (self-hosted) | $720 per year for up to 3 users, self-hosted | Paid self-hosted license with 1,500 premium credits, API access, embedded signing, public links, kiosk mode and analytics. |

Read from https://www.opensignlabs.com/plans-pricing on Oct 17, 2026. Prices change, so confirm with OpenSign before buying.

## Ways to pay less

- **Lower price with yearly billing** (Annual discount): Professional is $9.99 a month billed yearly against $29.99 monthly, and Teams $19.99 per user a month yearly against $39.99 monthly. Source: https://www.opensignlabs.com/plans-pricing

## Key features

- **Unlimited free signatures:** Both the free cloud plan and the self-hosted version allow unlimited signatures, requests to others and templates.
- **Open source and self-hostable:** The code is on GitHub under the AGPL-3 license and can be installed on your own servers by following the self-host guide.
- **Completion certificates:** Signed files are sealed with a certificate, so any later change breaks the signature, and come with a log of access and timestamps.
- **Templates and signing order:** Reusable templates, 14 field types, signing order, document expiry and an option for signers to decline.
- **API, webhooks and Zapier:** Paid plans add API access, webhooks, a Zapier integration, embedded signing and your own Gmail or SMTP account for emails.
- **Premium credits:** Paid plans include credits used for API sends, public signing links, bulk sends and kiosk-mode signing in person.

## Good for

- Individuals and small businesses that want unlimited signatures at no cost
- Developers who want to host an open-source signing tool themselves
- Teams that need API sends and webhooks for a low yearly price

## Worth knowing

- API sends, public links and bulk sending use premium credits: 240 a year on Professional yearly, 100 a month on the monthly plan.
- SSO, custom branding, a custom domain and an uptime SLA come only with Enterprise, priced on request.
- Support for free users is through GitHub issues and Discord; official support comes with the cloud plans.
- Payment requests and a mobile app are listed as coming soon on the Teams plan.

## ToolGPA grades

**GPA: 2.6 out of 4**, graded Oct 17, 2026. OpenSign's free cloud plan lets you send unlimited documents with templates and signing order, which nothing else here matches, and you can host it yourself too. Paying adds reminders, an API and team sharing. But three people on Teams pay about $60 a month, and your own branding needs Enterprise.

- **Value for money: C.** Teams is $19.99 a user a month billed yearly ($39.99 monthly), so about $60 a month for three. That's the dearer end of this category, for shared templates and your own storage. The free cloud plan covers 20 documents a month if you can do without sharing; self-hosting doesn't count.
- **Free plan and trial: A.** The free cloud plan has unlimited signatures and templates, 14 field types, signing order and completion certificates, with no cap a normal person would reach. Automatic reminders and the API are the paid bits.
- **Features: C.** Templates, signing order, expiry dates, decline, sealed completion certificates, plus API, webhooks, Zapier and embedded signing on paid plans. The gaps: custom branding needs Enterprise, there's no mobile app, and payment requests are still listed as coming soon.
- **Ease of use: C.** No store rating on record. The cloud version is a web app with templates to set up; hosting it yourself means following the self-host guide and running a server.
- **Platforms and integrations: B.** Web only, with Zapier, Dropbox and Gmail, and an API, webhooks and embedded signing on paid plans. No phone app yet, so it's web with integrations.

These are ToolGPA's own grades. Graded from this listing, whose facts were read from OpenSign's own pages on 17 October 2026. Its pricing page showed no plans when we checked, so the prices here are the listing's. Not based on using the product, and shorter than our full reviews.

## Where it stands among e-signature and proposal tools

- OpenSign's GPA of 2.6 is higher than 7 of the 13 other e-signature and proposal tools we grade, and level with 4.
- It stands best on free plan and trial (A, above 13 of 13) and worst on features (C, above 0).
- Its paid plans start at $9.99 a month, against a middle price of $11.50 for the category: 2 of the 13 others that charge start lower.
- On features, ease of use and platforms it scores 2.3 out of 4. 2 tools score higher and cost less.

The category's chart of price against score: https://toolgpa.com/charts/e-signatures

## Keep it, or make your own?

**You could make this.** What OpenSign does at its core is documents and templates, and that is the kind of thing an AI app builder makes well. You would give up one thing, listed below, and little else. It costs $119.88 a year. An AI app builder starts at about $19 a month on our listings, and you only need it while you build. OpenSign is open source, so there is a third way: take its code and run it yourself.

- You could make: Documents and templates: an app builder makes these well.
- You could make: It runs in a browser, which is where something home-made would run too.
- You could not: It plugs into other products, Zapier, Dropbox and Gmail among them, and has an API.

A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it.

## Works with

Zapier, Dropbox, Gmail

**Tags:** Documents, Templates, Open source, Self-hostable, Public API

## Alternatives

- [Documenso](https://toolgpa.com/tools/documenso): Open-source document signing, hosted or on your own servers. [Compare](https://toolgpa.com/compare/documenso-vs-opensign)
- [Docusign](https://toolgpa.com/tools/docusign): E-signature service for sending, signing and tracking agreements. [Compare](https://toolgpa.com/compare/docusign-vs-opensign)
- [SignWell](https://toolgpa.com/tools/signwell): E-signatures priced by sender, with unlimited documents on paid plans. [Compare](https://toolgpa.com/compare/opensign-vs-signwell)
- [BoldSign](https://toolgpa.com/tools/boldsign): Low-cost e-signature app and API from Syncfusion. [Compare](https://toolgpa.com/compare/boldsign-vs-opensign)
- [Zoho Sign](https://toolgpa.com/tools/zoho-sign): Per-user e-signature app from Zoho with a free single-user plan. [Compare](https://toolgpa.com/compare/opensign-vs-zoho-sign)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 17, 2026:

- https://www.opensignlabs.com/plans-pricing
- https://www.opensignlabs.com
- https://www.opensignlabs.com/faqs
- https://app.opensignlabs.com/locales/en/translation.json
- https://github.com/OpenSignLabs/OpenSign

Page: https://toolgpa.com/tools/opensign
Listed by ToolGPA (toolgpa.com).