# OpenSign

> A free, open-source digital signature platform for documents

- **Canonical URI:** https://www.vioscale.ai/software/opensign
- **Category:** Esignature
- **Homepage:** https://www.opensignlabs.com
- **Also known as:** opensign
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-19T09:14:56.001Z

## Vioscale score

**37.4 / 100**, confidence 47% (low). Computed 2026-09-01. _(updating — computed under an earlier model version or past its freshness window.)_

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| price_level | 80 | 0.052 | 4.2 | ✓ |
| reliability | 0 | 0.073 | 0 | - |
| capabilities | 0 | 0.04877777777777778 | 0 | - |
| integrations | 8.7 | 0.04066666666666666 | 0.4 | ✓ |
| security_posture | 0 | 0.073 | 0 | - |
| pricing_transparency | 25 | 0.084 | 2.1 | ✓ |

## Pricing

_As of 2026-08-19, [verify at source](https://www.opensignlabs.com). Independently observed._

Hybrid · Free tier

> Free tier with unlimited signatures. Professional paid plans available (pricing not publicly listed).

| Plan | Price | Free | Commitment |
|---|---|:--:|---|
| Free | Free | ✓ | - |
| Professional | - | - | - |

### Free

Unlimited signatures with document storage

**Included limits:** signatures: unlimited/month

- Unlimited e-signatures
- Invite and collaborate
- Completion certificates with access logs
- Secure document storage
- Multi-signer support
- Email OTP verification for guest signers
- Document expiration settings
- API access

### Professional

Paid tier with advanced professional features

- Advanced features

## About

An open-source solution that enables secure signing, storage, and management of digital documents, offering a no-cost alternative to commercial e-signature services.

_Independently observed._

## Platform & deployment

- **Platforms:** Web
- **Deployment:** Cloud / SaaS, Self-hosted

## Integrations (1)

_Independently observed._

- Zapier

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://www.opensignlabs.com) | 2026-08-19 | 60% (medium) |
| pricing.model | freemium | [link](https://www.opensignlabs.com) | 2026-08-19 | 60% (medium) |
| pricing.price_level | low | [link](https://www.opensignlabs.com) | 2026-08-19 | 60% (medium) |
| pricing.transparent | no | [link](https://www.opensignlabs.com) | 2026-08-19 | 60% (medium) |

### integrations

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| integrations.count | 1 | [link](https://www.opensignlabs.com) | 2026-08-19 | 60% (medium) |

### market

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | [link](https://www.opensignlabs.com) | 2026-08-19 | 75% (high) |

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*Source: Vioscale (https://www.vioscale.ai/software/opensign). Independent, evidence-based software intelligence. Cite the canonical URI.*