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Most buyers should pick OpenSign.
Choose OpenSign for free, unlimited e-signatures or a lower listed paid entry price: Professional starts at $9.99/month when billed annually. Choose DocuSeal if you need an API, embedded signing, workflow integrations, or self-hosting. Its free cloud plan is limited to one user and 10 signature-request emails monthly, while its self-hosted open-source option has unlimited users and documents. Check DocuSeal’s per-document API fees and OpenSign’s premium-credit limits before choosing.
01Side by side
| OpenSign | DocuSeal | |
|---|---|---|
| Starting price | Paid plans start at $9.99/month with annual billing | Cloud Pro starts at $16.67/user/month with annual billing |
| Free plan | Free for life; unlimited e-signatures and guest signers | Free cloud: 1 seat, 10 emails monthly; self-hosted unlimited |
| Best for | Individuals wanting unlimited, straightforward e-signatures | Teams needing cloud or self-hosted signing workflows |
| Core strength | Unlimited free signing, collaboration, and completion certificates | APIs, embedded signing, webhooks, and self-hosting |
| Learning curve | Not published; comparative learning-curve evidence unavailable | Not published; comparative learning-curve evidence unavailable |
| Integrations and data | PDF signing and Drive vault; integrations not specified | API, embeds, webhooks, automation integrations, and self-hosting |
| Team and seat costs | Teams: $19.99/user/month with annual billing | Cloud Pro: $16.67/user/month with annual billing |
| Support | Support options not published on the vendor's site | Community GitHub support; Pro includes a dedicated account manager |
OpenSign Choose OpenSign if
- Choose OpenSign if unlimited free signatures are your priority.
- Choose OpenSign if you want a lower listed annual paid entry price.
- Choose OpenSign if you need simple PDF signing and document storage.
DocuSeal Choose DocuSeal if
- Choose DocuSeal if you need API or embedded signing options.
- Choose DocuSeal if you plan to self-host signing workflows.
- Choose DocuSeal if webhooks or listed automation integrations matter.
02Pricing compared
OpenSign has the lower listed paid entry price, but only on annual billing: Professional is $9.99 per month equivalent, versus $29.99 month to month. It includes 100 premium credits monthly on monthly billing or up to 240 per year on annual billing; annual bulk sending is capped at 240 documents. Teams is $19.99 per user/month annually or $39.99 monthly, with up to 500 credits/API signatures per year on annual billing.
DocuSeal Cloud Pro costs $20 per user/month, or $16.67 per user/month when billed annually at $200 per user. Cloud Basic is free but limited to one seat and 10 request emails monthly. Self-hosted Open Source is free with unlimited users and documents; On-Premises Pro is $20 per user/month. Pro API and embedded signing cost $0.20 per completed document. Compare usage and seats, not just starting prices.
03Features and depth
OpenSign focuses on PDF e-signatures, with free unlimited signing and unlimited guest signers listed for its Free plan. Its homepage also advertises collaboration, completion certificates with access logs, and document storage in OpenSign Drive. The important limit is on premium sending: Professional and Teams use credits, and OpenSign does not publish seat caps for those plans.
DocuSeal covers more file types and integration paths. Its homepage lists PDF, DOCX, XLSX, JPEG, PNG, and ZIP uploads, with a 100MB maximum. It offers a REST API, webhooks, SDKs, embedded signing, and connections to Zapier, Make.com, n8n, and Power Automate. It can run in the cloud or on your own servers. The free self-hosted version includes unlimited users and documents, while cloud API and embedding access are part of Pro and carry a per-document fee. DocuSeal lists signature compliance with ESIGN, UETA, and eIDAS.
04Ease of use and learning curve
The plan choice shapes the setup more than the feature lists do. OpenSign offers a free plan for signing, but its published seat limits are not specified, and premium sending requires tracking credits. Its Professional and Teams plans also have different credit and bulk-send caps.
DocuSeal Cloud avoids self-hosting, but Cloud Basic allows one user and 10 signature-request emails per month. Its self-hosted option removes those user and document limits, but requires hosting it on your own servers. The available product information does not give enough detail to compare setup time or interface learning curves. If you want integrations or embedded signing, check the Pro fees and plan requirements before choosing.
Questions people ask
Is OpenSign really free for unlimited signing?
OpenSign’s Free plan is listed as free for life with unlimited e-signatures and unlimited guest signers. Seat limits are not published. Premium sending is separate: Professional and Teams have credit limits, so unlimited signing does not mean every premium sending method is unlimited.
Which is cheaper, OpenSign or DocuSeal?
Both offer free options. OpenSign Professional is listed at $9.99 per month when billed annually, while DocuSeal Cloud Pro is $16.67 per user/month annually. These plans are not identical: compare OpenSign’s credit caps with DocuSeal’s per-user pricing and $0.20 Pro API/embedding fee per completed document.
Does DocuSeal have a free plan?
Yes. DocuSeal Cloud Basic is free for one user and includes 10 signature-request emails per month. Its self-hosted Open Source plan is also free and lists unlimited users and documents. The cloud and self-hosted plans have different limits and setup requirements.
Does DocuSeal charge extra for API or embedded signing?
DocuSeal Cloud Pro and On-Premises Pro list API and embedding access, with a charge of $0.20 per completed signed document. Cloud sandbox/test mode is free. Cloud Basic does not list API or embedding access, so check the plan requirements before building an integration.