The short answer: DocuSign is a mature, enterprise eSignature suite with a large integration ecosystem — but it's paid and closed source. OpenSign delivers the core signing experience for free, is open source, and can be self-hosted. If you want unlimited signing without subscription costs or vendor lock-in, OpenSign wins; if you need a vast marketplace of enterprise integrations, DocuSign still leads there.
Pricing
DocuSign has no permanent free plan — only a trial — and per-seat pricing rises as you add features and users. OpenSign's core eSignature features are free, with paid tiers only for higher sending volumes. See the OpenSign pricing page.
Features compared
| Capability | OpenSign™ | DocuSign |
|---|---|---|
| Free plan | Yes (unlimited self-signing) | No |
| Open source | Yes | No |
| Self-hosting | Yes | No |
| Templates | Yes | Yes (paid tiers) |
| Bulk / quick send | Yes | Yes |
| Audit trail & certificate | Yes | Yes |
| API & webhooks | Yes | Yes (higher tiers) |
| SSO | Yes | Yes |
| Data ownership | Full (self-host) | Vendor-hosted |
Compliance & legality
Both tools produce legally binding electronic signatures under the ESIGN Act, UETA and eIDAS, and both generate a timestamped audit trail and certificate of completion. With OpenSign you can additionally self-host to keep all signing data within your own compliance boundary.
When to choose OpenSign
- You want a free, no-strings eSignature tool.
- You need to self-host or own your data.
- You value open-source transparency and no lock-in.
- You're a startup, nonprofit, freelancer or small team watching costs.
When DocuSign might fit better
- You need a specific niche enterprise integration only DocuSign offers.
- You require their particular qualified/advanced signature certifications in certain regions.
Ready to try it? Create a free OpenSign account and start signing documents in minutes — no credit card required. Prefer to run it yourself? OpenSign is 100% open source on GitHub.
Comparing more tools? Read OpenSign vs DocuSeal or the full list of DocuSign alternatives.