OpenSign vs Signaturely
OpenSign
opensignlabs.comSignaturely
signaturely.comSide by side
| Figure | OpenSign | Signaturely |
|---|---|---|
| Price from | $9.99/mo | $20/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 5 | 13 |
| Spec score · E-Signature Software | 9.0 (#4) | 8.2 (#36) |
| Spec score · Electronic Signature Software | 9.0 (#3) | 8.2 (#16) |
| Spec score · E-signature tools | 8.9 (#10) | 8.3 (#25) |
| API | OpenSign exposes a REST API authenticated with an x-api-token header and provides sandbox, production and EU endpoints. | The API supports automated signature requests and templates, and its pricing is separate from regular Signaturely plans. |
| API access | Yes | Yes |
| Audit trail | Yes | Yes |
| Bulk sending | Yes | Yes |
| Free plan | Yes | Yes |
| Integrations | The Professional plan lists Zapier integration, Dropbox import and custom Gmail or SMTP sending. | The regular plans list Google Drive, Dropbox, OneDrive and Box integrations, and the API page says Zapier is also available. |
| Security | The API documentation lists TLS-encrypted transport, audit trails, IP logging, and tamper-evident signed PDFs. | Signaturely says data is encrypted at rest and uses 256-bit encryption in transit, offers two-factor authentication, and performs regular third-party penetration tests. |
| Support | The documentation directs users to contact OpenSign support at [email protected] for assistance. | The site directs users to its Help Center and offers a contact option for additional questions. |
Plans
OpenSign
- FreeFree
- Professional$9.99 a month
- Teams$19.99 a month
- FreeFree
- EnterprisePriced on request
Signaturely
- FreeFree
- Personal$25 a month
- Personal Annual$240 a year
- Business$50 a month
- Business Annual$480 a year
- Free accountFree
- Personal (monthly)$25 a month
- Gold (API)$49 a month
- Business (monthly)$50 a month
- Platinum (API)$99 a month
In their own words
OpenSign
OpenSign is an open-source PDF e-signature solution for signing, storing, and securing documents. Users can create reusable templates with pre-placed widgets and send them through the API to one or many signers. API workflows include self-signing, drafts, signer roles, public template links, and real-time webhook notifications. Templates can be embedded in React, Next.js, HTML, JavaScript, and Angular projects. The documentation lists TLS-encrypted transport, audit trails, IP logging, and tamper-evident signed PDFs; account protection includes two-factor authentication and passkey sign-in. The free plan costs nothing and lists unlimited digital signatures and templates, completion certificates, sequential signing, OpenSign Drive, and email notifications. Its free-plan guide limits invitation emails to 15 per month; bulk sending and public links require a paid plan. Live API tokens require Professional or Teams, though sandbox tokens are available on all plans. OpenSign provides Docker self-hosting instructions for Linux, macOS, and Windows. Some SMTP features are limited to paid plans.
Signaturely
Signaturely lets users upload documents, add required fields, email them to signers, and collect electronic signatures. Signers can type their name, draw a signature, or upload an image. Users can make reusable templates, share them with a team, and route documents in a specified signing order. Signaturely tracks document status, sends automatic reminders, and keeps an audit log of document activity. Regular plans list Google Drive, Dropbox, OneDrive, and Box integrations; the API page also lists Zapier. API tools support automated signature requests and templates, with separate API pricing and request allowances that depend on the account plan. A free plan allows one signature request per month and includes audit history; paid plans start at $25 a month, and a 7-day trial is listed. Personal allows five monthly requests and one template; Business lists unlimited requests and templates, team management, and custom branding. Signaturely says it encrypts data at rest and in transit, offers two-factor authentication, and performs regular third-party penetration tests. It describes its e-signatures as following UETA, ESIGN, and eIDAS.