Best SignatureAPI Alternatives in 2026
Updated
20 platforms from electronic signature software ranked against SignatureAPI on the same published basis.
- 1SignatureAPI vs BoldSign
- 2SignatureAPI vs DigiSigner
- 3SignatureAPI vs Dropbox Sign
- 4SignatureAPI vs Signaturely
- 5SignatureAPI vs Leegality
- 6SignatureAPI vs Signority API
- 7SignatureAPI vs Skribble
- 8SignatureAPI vs sproof sign
- 9SignatureAPI vs Xodo Sign
- 10SignatureAPI vs DocuSeal
- 11SignatureAPI vs OpenSign
- 12SignatureAPI vs Secured Signing
- 13SignatureAPI vs Sertifi by Flywire
- 14SignatureAPI vs SignWell
- 15SignatureAPI vs Zoho Sign
- 16SignatureAPI vs Namirial Sign
- 17SignatureAPI vs DocuSign eSignature
- 18SignatureAPI vs Signeasy
- 19SignatureAPI vs Adobe Acrobat Sign
- 20SignatureAPI vs Foxit eSign
SignatureAPI alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | BoldSign | 7.4 | Free plan | $5/mo | Android, API, Browser, iOS |
| 2 | DigiSigner | 7.4 | Free plan | $15/mo | API, Web |
| 3 | Dropbox Sign | 7.4 | Free plan | $15/mo | Android, API, iOS, Web |
| 4 | Signaturely | 7.4 | Free plan | $20/mo | Android, API, iOS, Web |
| 5 | Leegality | 7.3 | Free plan | ₹15/mo | Android, API, iOS, Web |
| 6 | Signority API | 7.3 | Free plan | $10.75/mo | API, self-hosted, Web, Windows |
| 7 | Skribble | 7.3 | Free plan | €23/mo | Android, API, iOS, Web |
| 8 | sproof sign | 7.3 | Free plan | — | API, Web |
| 9 | Xodo Sign | 7.3 | Free plan | $0.83/mo | Android, API, iOS, Web |
| 10 | DocuSeal | 7.2 | Free plan | $0.20/mo | API |
| 11 | OpenSign | 7.2 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 12 | Secured Signing | 7.2 | Free plan | $30119.17/mo | Android, API, iOS, Mac, Web, Windows |
| 13 | Sertifi by Flywire | 7.2 | Free plan | Free | API |
| 14 | SignWell | 7.2 | Free plan | $10/mo | API |
| 15 | Zoho Sign | 7.2 | Free plan | Free | API |
| 16 | Namirial Sign | 7.1 | Free plan | Free | API |
| 17 | DocuSign eSignature | 7.0 | No | $11/mo | API |
| 18 | Signeasy | 6.9 | No | $10/mo | Android, API, iOS, Web |
| 19 | Adobe Acrobat Sign | 6.8 | No | — | API, Web |
| 20 | Foxit eSign | 6.8 | No | — | API |
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Questions about SignatureAPI alternatives
What is the best alternative to SignatureAPI?
BoldSign, number 1 in electronic signature software with a score of 7.4 out of 10. The others here: DigiSigner, Dropbox Sign, Signaturely and 16 more.
What is the best free alternative to SignatureAPI?
BoldSign is the best-ranked alternative with a free plan. 16 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.