Best SignatureAPI Alternatives in 2026
Updated
20 platforms from electronic signature software ranked against SignatureAPI on the same published basis.
- 1SignatureAPI vs Dropbox Sign
- 2SignatureAPI vs Signaturely
- 3SignatureAPI vs Certinal
- 4SignatureAPI vs Leegality
- 5SignatureAPI vs Skribble
- 6SignatureAPI vs Xodo Sign
- 7SignatureAPI vs DigiSigner
- 8SignatureAPI vs Signority API
- 9SignatureAPI vs sproof sign
- 10SignatureAPI vs Dokobit
- 11SignatureAPI vs OpenSign
- 12SignatureAPI vs Secured Signing
- 13SignatureAPI vs BoldSign
- 14SignatureAPI vs Signeasy
- 15SignatureAPI vs Adobe Scan
- 16SignatureAPI vs eSign.AI
- 17SignatureAPI vs Sertifi
- 18SignatureAPI vs Autenti
- 19SignatureAPI vs DocuSeal
- 20SignatureAPI vs Sertifi by Flywire
SignatureAPI alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Dropbox Sign | 7.9 | Free plan | $15/mo | Android, API, iOS, Web |
| 2 | Signaturely | 7.9 | Free plan | $20/mo | Android, API, iOS, Web |
| 3 | Certinal | 7.8 | Android, API, iOS, Web | ||
| 4 | Leegality | 7.8 | Free plan | ₹15/mo | Android, API, iOS, Web |
| 5 | Skribble | 7.8 | Free plan | €23/mo | Android, API, iOS, Web |
| 6 | Xodo Sign | 7.8 | Free plan | $0.83/mo | Android, API, iOS, Web |
| 7 | DigiSigner | 7.7 | Free plan | $15/mo | API, Web |
| 8 | Signority API | 7.7 | Free plan | $10.75/mo | API, self-hosted, Web, Windows |
| 9 | sproof sign | 7.6 | Free plan | API, Web | |
| 10 | Dokobit | 7.5 | Free plan | €10/mo | Android, API, Browser, iOS, Linux, Mac, Web, Windows |
| 11 | OpenSign | 7.3 | Free plan | Free | API, Linux, Mac, self-hosted, Web, Windows |
| 12 | Secured Signing | 7.3 | Free plan | $30119.17/mo | Android, API, iOS, Mac, Web, Windows |
| 13 | BoldSign | 7.2 | Free plan | $5/mo | Android, API, Browser, iOS |
| 14 | Signeasy | 7.2 | $10/mo | Android, API, iOS, Web | |
| 15 | Adobe Scan | 7.1 | No | Android, iOS | |
| 16 | eSign.AI | 7.1 | Android, API, iOS, Web | ||
| 17 | Sertifi | 7.1 | Free plan | Free | API, Web |
| 18 | Autenti | 6.9 | No | €1.67/mo | Android, API, iOS, Web |
| 19 | DocuSeal | 6.8 | Free plan | $0.20/mo | API |
| 20 | Sertifi by Flywire | 6.8 | Free plan | Free | API |
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Questions about SignatureAPI alternatives
What is the best alternative to SignatureAPI?
Dropbox Sign, number 1 in electronic signature software with a score of 7.9 out of 10. The others here: Signaturely, Certinal, Leegality and 16 more.
What is the best free alternative to SignatureAPI?
Dropbox Sign is the best-ranked alternative with a free plan. 15 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on.