OpenSign vs S-Docs
OpenSign
opensignlabs.com
S-Docs
sdocs.comSide by side
| Figure | OpenSign | S-Docs |
|---|---|---|
| Price from | $9.99/mo | $2.08/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 5 | 10 |
| Spec score · E-Signature Software | 9.0 (#4) | 8.7 (#13) |
| Spec score · E-signature tools | 8.9 (#10) | 8.7 (#15) |
| API access | Yes | Yes |
| Documentation | The official documentation includes user help, API references, contribution guidance and self-hosting instructions. | The knowledge base contains installation guides, template tutorials, syntax examples, SDK resources, troubleshooting and release notes. |
| Rating on Capterra | 4.7 out of 5 from 3 reviews. | 4.7 out of 5 from 3 reviews |
| Rating on G2 | 4.6 out of 5 from 12 reviews. | 4.7 out of 5 from 127 reviews |
| Rating on GetApp | 4.7 out of 5 from 3 reviews. | 4.7 out of 5 from 3 reviews |
| Security | The API documentation lists TLS-encrypted transport, audit trails, IP logging, and tamper-evident signed PDFs. | S-Docs describes its Salesforce solution as FedRAMP High and DoD IL5 compliant. |
| Support | The documentation directs users to contact OpenSign support at [email protected] for assistance. | The company FAQ says free-plan support is primarily self-service, while paid plans include support and higher tiers may include SLAs and live sessions. |
| Templates | Users can create reusable templates with pre-placed widgets and send them to one or many signers through the API. | Templates can use Salesforce data, conditional logic, formulas, related data, and custom Apex. |
| What it does | OpenSign provides cloud and self-hosted electronic document signing for creating, sending, signing, storing and tracking documents. | S-Docs generates business documents and captures e-signatures inside Salesforce and HubSpot workflows. |
Plans
OpenSign
- FreeFree
- Professional$9.99 a month
- Teams$19.99 a month
- FreeFree
- EnterprisePriced on request
S-Docs
- S-Docs for HubSpot FreeFree
- S-Docs for Salesforce (free)Free
- S-Docs for Salesforce FreeFree
- S-Docs for Salesforce$25 a month
- S-Docs for Salesforce (paid)$25 a year
- S-Docs for Salesforce with e-Signature$40 a month
- S-Docs for HubSpot Team Edition$65 a month
- S-Docs for HubSpot Professional Edition$275 a month
- Custom quotePriced on request
- S-Docs with e-SignaturePriced on request
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.
S-Docs
S-Docs automates document generation and e-signatures using CRM data, with templates and workflows designed for Salesforce and direct integration with HubSpot. Salesforce templates can draw on Salesforce data, related data, formulas, conditional logic, and custom Apex. Documents can be generated on demand, through Salesforce Flow, or in scheduled and batch processes. The Salesforce product runs natively inside an organization and processes data on the Salesforce platform. Listed storage options include Amazon S3, Box, and Google Drive. Output types include emails, PDF, DOC, HTML, CSV, DOCX, PPTX, and XLSX files, along with certificates, contracts, and quotes; API access and batch personalization are also listed. S-Docs describes its Salesforce solution as FedRAMP High and DoD IL5 compliant, and its Trust Center lists FedRAMP and SOC materials. The free Salesforce plan allows up to 150 documents and 50 e-signatures. The paid plan is listed at $25 a year, billed annually at $25 per user per month, with a $3,000 minimum contract and 10-license minimum. It requires Salesforce Enterprise, Unlimited, Performance, or Developer Edition, and does not support collecting data through fillable PDFs.