OpenSign
A free, open-source digital signature platform for documents
- Also known as
- opensign
Available worldwide
What is OpenSign?
An open-source solution that enables secure signing, storage, and management of digital documents, offering a no-cost alternative to commercial e-signature services.
OpenSign pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Free tier with unlimited signatures. Professional paid plans available (pricing not publicly listed).
Free
FreeUnlimited signatures with document storage
- 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
Platform & deployment
Independently observed- Web
- Cloud / SaaS
- Self-hosted
Integrations (1)
Independently observed- Zapier
OpenSign alternatives
Other esignature we track, ranked by the same independent score.
- SignNowElectronic signature platform that enables organizations to send, sign, and manage documents with legally binding signatureshigh · 77%
- DocuSealOpen-source document signing platform that simplifies electronic signature workflows across cloud and self-hosted deploymentsmedium · 63%
- OneSpan SignCloud-based electronic signature platform for enterprises to securely digitize document signing workflows.medium · 57%
- Dropbox SignStreamline digital signature workflows to make document approval faster and simpler across teams.high · 76%
- SigneasyA unified platform for drafting, signing, organizing, and analyzing contracts with AI-powered insights and automated workflowshigh · 77%
- DocumensoAn open source platform for collecting and managing electronic signatures at any scale, with enterprise-grade compliance built in.high · 77%
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for OpenSign, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Price level | 80 | 0.05 | 4.2 | ✓ |
| Pricing transparency | 25 | 0.08 | 2.1 | ✓ |
| Integrations | 9 | 0.04 | 0.4 | ✓ |
| Reliability | 0 | 0.07 | 0.0 | - |
| Capabilities | 0 | 0.05 | 0.0 | - |
| Security posture | 0 | 0.07 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.