ctSignature
6.3#20 in electronic signature apisFrom $29 a monthWebAPI
VisitctSignature vs OpenSign
What both publish
| Fact | ctSignature | OpenSign |
|---|---|---|
| Audit trail | The product describes cryptographic document hashing and per-action audit logs as tamper-evident signing evidence. | Yes |
| Intended users | The maker names real estate, HR and legal, agencies and contractors, small businesses, healthcare, finance, insurance, and nonprofits as use cases. | The documentation describes the product as designed for individuals and businesses, from startups to large corporations. |
| Product | ctSignature is a no-code e-signature platform for uploading PDFs, placing fields, sending documents, and tracking signing. | OpenSign describes itself as an open-source PDF e-signature solution for signing, storing, and securing documents. |
ctSignature plans
- Pay-As-You-Go-10$10, paid once
- Starter$29 a month
- Pay-As-You-Go-75$50, paid once
- Pro$99 a month
- EnterprisePriced on request
OpenSign plans
- FreeFree
- Professional$9.99 a month
- Teams$19.99 a month
- EnterprisePriced on request
Pick ctSignature if…
You want what its maker publishes above — check its page for the details.
Pick OpenSign if…
OpenSign may suit individuals and businesses that need PDF signing, reusable templates, or API-based signing workflows. It also offers self-hosting instructions for those who want to run it on Linux, macOS, or Windows.