Best Sertifi API Alternatives in 2026
The top Sertifi API alternatives are DocuSign eSignature, BoldSign and Zoho Sign: 15 digital signature API software our editors would look at instead of Sertifi API, in our ranking order.
Sertifi API: A broad REST and SOAP API for complex enterprise signature integrations. Where it falls short: pricing uses a contact-sales model.
Switching from Sertifi API? For most digital signature api software buyers the best Sertifi API alternative is DocuSign eSignature, built for organizations needing the broadest mature platform. On a budget, Xodo Sign (formerly eversign) starts at $3/user/mo. Inkless offers the most webhook event types (17).
Why People Look for a Sertifi API Alternative
- Pricing uses a contact-sales model
- Identity verification is not included
- The platform is focused on API-led integrations rather than a standalone price-led offer
- No identity verification — 4 of the alternatives below have it
Quick Picks by What You Need
- Best overallDocuSign eSignature9.4
Organizations needing the broadest mature platform
Visit DocuSign eSignature - Lowest priceXodo Sign (formerly eversign)8.7
Paid plans from $3/user/mo
Visit Xodo Sign (formerly eversign) - Best free optionDocuSign eSignature9.4
Has a free plan
Visit DocuSign eSignature - Most webhook event typesInkless8.0
17
Visit Inkless - Best for identity verificationSignater8.2
Identity verification (Sertifi API: no)
Visit Signater
All 15 Sertifi API Alternatives, Ranked
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
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Best forOrganizations needing the broadest mature platform
- Better than Sertifi API:
- Editor score 9.4 vs 8.3
A broad eSignature platform with API automation, workflows, integrations, and mobile signing.
9.4/10★★★★★Visit DocuSign -
Best forAPI buyers prioritizing low cost and breadth
- Better than Sertifi API:
- Editor score 9.2 vs 8.3
A low-cost signing platform with broad workflow, integration, and API coverage.
9.2/10★★★★★Visit BoldSign -
Best forZoho-centric teams needing a full API suite
- Better than Sertifi API:
- Editor score 9.1 vs 8.3
A Zoho-focused signing platform with REST APIs, webhooks, SDKs, and a free tier.
9.1/10★★★★★Visit Zoho Sign -
Best forTeams wanting affordable API signing
- Better than Sertifi API:
- Editor score 8.9 vs 8.3
Affordable API and embedded signing with templates, authentication, and broad integrations.
8.9/10★★★★☆Visit signNow -
Best forTeams wanting free, feature-rich e-signing
- Better than Sertifi API:
- Editor score 8.8 vs 8.3
A broad e-signing platform with a free entry point, API embedding, and business workflows.
8.8/10★★★★☆Visit Foxit eSign -
Best forBudget-conscious API users
- Better than Sertifi API:
- Editor score 8.7 vs 8.3
A low-cost signature API with templates, webhooks, mobile apps, and workflow controls.
8.7/10★★★★☆Visit Xodo Sign -
Best forDevelopers wanting open-source self-hosting
- Better than Sertifi API:
- Editor score 8.6 vs 8.3
A flexible eSignature API with self-hosting, embedded signing, and a free starting point.
8.6/10★★★★☆Visit DocuSeal -
Best forEnterprises already using Adobe workflows
- Better than Sertifi API:
- Editor score 8.5 vs 8.3
A mature Adobe-centered signing platform for complex business workflows.
8.5/10★★★★☆Visit site -
Best forEnterprises needing branded API workflows
- Better than Sertifi API:
- Editor score 8.4 vs 8.3
A strong fit for branded, API-driven signing workflows with enterprise controls.
8.4/10★★★★☆Visit OneSpan Sign -
Best forDevelopers needing identity and white-label controls
- Better than Sertifi API:
- Identity verification
A developer-focused signing platform with strong identity and white-label options.
- Sandbox environment
- Signed-file retrieval
- Workflow status API
8.2/10★★★★☆Visit Signater -
Best forHigh-volume API signing at low envelope cost
- Better than Sertifi API:
- Identity verification
Low-cost API signing with embedded workflows, webhooks, and qualified signatures.
- Sandbox environment
- Embedded signing
- Signed-file retrieval
8.1/10★★★★☆Visit emSigner API -
Best forPay-per-document API signing users
- Better than Sertifi API:
- Identity verification
A focused API signing service with low per-document pricing and workflow controls.
- Sandbox environment
- Embedded signing
- Signed-file retrieval
8.0/10★★★★☆Visit Inkless -
Best forEuropean users needing qualified signatures
- Better than Sertifi API:
- Identity verification
A European e-signature platform with qualified signing and API workflows.
- Identity verification
7.9/10★★★★☆Visit Skribble -
Best forSmall teams needing simple embedded signing
A practical API signing platform for small teams that need embedded workflows.
7.8/10★★★★☆Visit SignWell -
Best forOpen-source teams needing broad self-hosting
A broad signing platform for teams that value self-hosting and developer access.
7.7/10★★★★☆Visit OpenSign
Sertifi API Alternatives: Common Questions
What is the best alternative to Sertifi API?
DocuSign eSignature: #1 in our Digital Signature API Software ranking, with an editor score of 9.4 out of 10. A broad eSignature platform with API automation, workflows, integrations, and mobile signing.
Is there a free alternative to Sertifi API?
Yes. DocuSign eSignature, BoldSign, Zoho Sign, Foxit eSign and Xodo Sign (formerly eversign) have a free plan or a free tier (10 of the 15 alternatives on this page).
What is the cheapest paid alternative to Sertifi API?
Of the alternatives here that publish a price, Xodo Sign (formerly eversign) starts lowest, at $3/user/mo.
Why do people look for Sertifi API alternatives?
Pricing uses a contact-sales model; Identity verification is not included; The platform is focused on API-led integrations rather than a standalone price-led offer.
Which Sertifi API alternative has the most webhook event types?
Inkless, with 17.
How do I switch from Sertifi API?
Export your data from Sertifi API (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel Sertifi API.
How to Switch from Sertifi API
- Export your data from Sertifi API (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel Sertifi API.
Sertifi API vs Each Alternative
| # | Tool | Free plan | Paid from | Score |
|---|---|---|---|---|
| 10 | Sertifi API | 8.3 | ||
| 1 | DocuSign eSignature | Yes | $11/user/mo | 9.4 |
| 2 | BoldSign | Yes | $5/user/mo | 9.2 |
| 3 | Zoho Sign | Yes | 9.1 | |
| 4 | signNow | No | $8/user/mo | 8.9 |
| 5 | Foxit eSign | Yes | 8.8 | |
| 6 | Xodo Sign (formerly eversign) | Yes | $3/user/mo | 8.7 |
| 7 | DocuSeal | Yes | $200/user/yr | 8.6 |
| 8 | Adobe Acrobat Sign | No | 8.5 | |
| 9 | OneSpan Sign | No | $22/user/mo | 8.4 |
| 10 | Signater | Yes | $23/mo | 8.2 |
| 11 | emSigner API | No | $0.99/unit usage-based | 8.1 |
| 12 | Inkless | No | £30/mo | 8.0 |
| 13 | Skribble | Yes | €23/user/mo | 7.9 |
| 14 | SignWell | Yes | $10/mo | 7.8 |
| 15 | OpenSign | Yes | 7.7 |
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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