Side by side
Autentique vs OpenSign
Both stand on e-signature software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan APIWeb
Autentique combines document preparation, delivery, signing, and management with multiple validation methods and API options. Check the monthly document allowance and plan terms against your expected volume before choosing a tier.
Visit Autentique
Free plan Open source APILinuxMac+3
Choose OpenSign if you need a free PDF signing plan, reusable templates, or self-hosting options. Look elsewhere if your free workflow depends on bulk sending, public links, or live API tokens, since those require paid plans.
Visit OpenSignThe facts
| Autentique | OpenSign | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Yes |
| Runs on | API, Web | API, Linux, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Professional: $19 a month | Professional: $9.99 a month |
| Plans published | 4 | 4 |
| Maker | Not published | Not published |
| Website | autentique.com.br | opensignlabs.com |
| On e-signature software | #4 of 68 | #1 of 68 |
Autentique: what it does well
- Upload PDF, DOC, or DOCX files or use custom templates.
- Send signing requests by email, SMS, WhatsApp, or link.
- GraphQL API supports webhooks and document management.
- Includes audit trails and multiple signer validation options.
What to know first
- Free plan is limited to 10 documents monthly.
- Deleting a document does not restore its monthly credit.
- API documentation sets a limit of 60 requests per minute.
OpenSign: what it does well
- Free plan includes unlimited digital signatures and templates.
- Templates support pre-placed widgets and reusable documents.
- Supports two-factor authentication and passkey sign-in.
- Offers Docker self-hosting instructions for Linux, macOS, and Windows.
- Sandbox API tokens are available on every plan.
What to know first
- Free users can send up to 15 invitation emails per month.
- Bulk sending and public links require a paid plan.
- Live API tokens require Professional or Teams.
- Some SMTP features are limited to paid plans.
Alternatives to Autentique Alternatives to OpenSign The whole list