OpenSign pricing starts at $0/month with a free cloud plan that includes unlimited e-signatures, unlimited document storage, and no monthly envelope cap. The Professional plan starts at $9.99/month when billed annually and adds live API access with up to 240 premium credits/API signatures per year. The Teams plan is $19.99/user/month and adds team management, template sharing, and organizational features. Enterprise pricing is custom. Self-hosting is free under an open-source license, though the free self-hosted version does not support API token generation; production API use in self-hosted deployments requires a paid self-hosted plan.
The best OpenSign plan for most individual users and small teams is the Free plan, which covers unlimited portal-based signing with no envelope cap and no credit card required. Professional at $9.99/month (billed annually) is the entry point for live API access, covering up to 240 premium credits/API signatures per year for API-created documents, public signing links, bulk signing, kiosk mode, and embedded signing. Teams at $19.99/user/month adds team management, organizational hierarchy, and template sharing across users. Enterprise is custom-quoted. The deployment options at a glance: Free cloud ($0), Professional cloud ($9.99/month annual), Teams cloud ($19.99/user/month), Enterprise (custom), and self-hosted (free software, paid plan required for API).
Four cloud tiers and a self-hosted option cover the range: Free for unlimited portal signing, Professional for API-integrated workflows, Teams for organizational deployments, and Enterprise for regulated or high-volume requirements. The plan structure raises practical questions. What counts as a premium credit, and which actions consume them? When does the free sandbox API differ from a live production token? What does self-hosting actually cost when engineering time is included? This guide covers every OpenSign pricing tier and what each plan includes, and compares OpenSign to DocuSign, SignWell, and developer-first alternatives built for embedded document workflows.
Key Takeaways
- The Free plan is $0/month with unlimited signing, unlimited document storage, unlimited guest signers, completion certificates, and sandbox API access for testing. No credit card required.
- The Professional plan starts at $9.99/month (billed annually) and adds live API access with up to 240 premium credits/API signatures per year, webhooks, Zapier integration, bulk send up to 240 documents, public signing links, embedded signing, and priority support.
- The Teams plan is $19.99/user/month and adds Teams and Organizations, template sharing with teams and individuals, BYOC storage, document ID removal, kiosk mode, and bulk send up to 500 documents/API signatures per year.
- The free self-hosted version does not support API token generation. Production API use in self-hosted deployments requires a paid self-hosted plan.
- OpenSign advertises unlimited free signing for standard portal-based use, but API-driven, public-link, bulk, kiosk, and embedded signing actions consume premium credits on paid plans (240/year on Professional, 500/year on Teams).
- The Free plan supports sandbox API tokens for testing; live API tokens require upgrading to Professional or Teams.
- For development teams building embedded signing into their own applications, Verdocs provides a self-serve free tier with full live API access, 25 envelopes per month, and 60+ native web components with no credit card required.
Why Teams Research OpenSign Pricing
Three buyer scenarios account for most OpenSign pricing searches.
- Evaluating the free tier’s real limits. The Free plan’s unlimited signing covers standard portal-based document sending. The practical question is where premium credits come in: API-driven, public-link, bulk, kiosk, and embedded signing all consume premium credits, which are only available on paid plans. Teams that need any of those workflows need to understand the Professional plan’s 240-credit annual cap before assuming the free tier covers their use case.
- Understanding API access tiers. OpenSign supports sandbox API tokens on the Free plan for testing, but live API tokens require a paid Professional or Teams plan. Developers who discover this mid-integration need to budget for Professional at $9.99/month (annual). Teams evaluating self-hosting for API access need to know the free self-hosted version does not support API token generation either.
- Comparing cloud cost against self-hosting. The self-hosted option appears across comparison articles as a zero-cost alternative, but infrastructure costs and engineering time change the equation. Teams with existing DevOps capacity may find self-hosting economical; teams without it often find that the Teams cloud plan is more cost-effective once engineering hours are included.
This guide answers all three before you need to contact sales.
OpenSign Pricing Plans in 2026
OpenSign offers four cloud pricing tiers and a self-hosted deployment option. Free, Professional, and Teams have published pricing; Enterprise is custom-quoted.
Here is a summary of all OpenSign plans and costs as of 2026:
Free: $0/month
- Unlimited signing (portal-based)
- Unlimited document storage
- Unlimited guest signers
- Completion certificate for every signed document
- Sandbox API tokens for testing
- Best for: Individuals and small teams with standard portal-based signing needs
Professional: $9.99/month (billed annually)
- Live API access with up to 240 premium credits/API signatures per year
- Webhooks and Zapier integration
- Custom email templates and automatic reminders
- Bulk send up to 240 documents
- Public signing links and embedded signing
- Priority support
- Best for: Developers and individuals needing live API integration and advanced signing features
Teams: $19.99/user/month
- Teams and Organizations management
- Template sharing with teams and individuals
- BYOC (Bring Your Own Cloud) storage
- Document ID removal from signed documents
- Kiosk mode
- Bulk send up to 500 documents/API signatures per year
- Best for: Organizations with multi-team signing workflows and shared template requirements
Enterprise: Custom
- Custom document and API volume
- Dedicated infrastructure and custom SLA
- Advanced compliance configuration
- Dedicated account management
- Best for: Large organizations with volume, compliance, or data residency requirements
Self-Hosted: Free software (paid plan required for API)
- Free under open-source license
- Unlimited portal-based signing
- Free self-hosted version does not support API token generation
- Production API requires a paid self-hosted plan
- Best for: Teams with data residency requirements and in-house DevOps capacity
OpenSign plans at a glance:
- Free ($0/month): unlimited signing, unlimited storage, unlimited guest signers, sandbox API, completion certificates
- Professional ($9.99/month annual): live API with 240 premium credits/year, webhooks, Zapier, bulk send 240, public links, embedded signing, priority support
- Teams ($19.99/user/month): Teams and Organizations, template sharing, BYOC storage, document ID removal, kiosk mode, bulk send 500
- Enterprise (custom): dedicated infrastructure, custom SLA, advanced compliance, dedicated account management
- Self-hosted (free software): unlimited portal signing; API requires paid self-hosted plan
The core differentiator between Free and Professional is live API access. The Free plan supports sandbox API testing but not live production tokens. Professional’s 240 premium credits per year cover API-created documents, public signing links, bulk signing, kiosk mode, and embedded signing. The core differentiator between Professional and Teams is organizational structure: Teams and Organizations hierarchy, shared templates, BYOC storage, and a higher 500-credit annual cap.
Free Plan: Features and Portal Signing
OpenSign’s Free plan is $0/month with no credit card required and no enrollment expiry. It covers unlimited portal-based signing for individuals and small teams.
Plan Summary:
- Price: $0/month
- Signing: Unlimited (portal-based)
- Document Storage: Unlimited (OpenSign Drive)
- Guest Signers: Unlimited
- API Access: Sandbox tokens only (no live production tokens)
- Premium Credits: Not included
- Best For: Individuals and small teams with standard document signing needs
What the Free plan includes:
- Unlimited signing: send as many signature requests as needed with no monthly envelope cap for standard portal-based workflows
- Unlimited document storage: completed documents stored in OpenSign Drive at no cost
- Unlimited guest signers: no restriction on the number of external signers receiving requests
- Completion certificate: every signed document generates a certificate with access logs and timestamped signing events
- Document templates: reusable templates for recurring workflow types
- Multi-party signing: send a document to multiple signers in a single request with sequential signing order support
- OTP verification: one-time passcode authentication for signer identity confirmation
- Audit trail: complete signing history with timestamps and IP logs for each document
- Sandbox API tokens: available for developer testing; live API tokens require a paid plan
Premium Credits and Free Plan Limits
OpenSign advertises unlimited free signing for standard portal use, but API-driven, public-link, bulk, kiosk, and embedded signing actions consume premium credits on paid plans. The Free plan does not include premium credits, so those specific workflows require upgrading to Professional or Teams. Teams whose workflows stay entirely within the portal-based signing model can use the Free plan at zero cost indefinitely.
Best For
Individuals, freelancers, and small teams managing contracts, NDAs, vendor agreements, and HR paperwork entirely through the portal interface with no programmatic API requirements. Teams that need sandbox API access for integration testing before committing to Professional pricing.
Professional Plan: Live API and Premium Credits
OpenSign’s Professional plan starts at $9.99/month when billed annually. It is the entry-level paid tier for developers and individuals who need live production API access and advanced signing features.
Plan Summary:
- Price: $9.99/month (billed annually; verify current monthly pricing on OpenSign’s pricing page)
- Signing: Unlimited portal-based plus 240 premium credits/API signatures per year
- API Access: Live production tokens included
- Premium Credits: 240/year for API-created documents, public links, bulk send, kiosk mode, and embedded signing
- Support: Priority
- Best For: Developers and individuals needing live API integration, webhooks, and advanced signing features
What the Professional plan adds over Free:
- Live API access: live production API tokens for programmatic document creation, template management, signer authentication, status polling, and signed document retrieval
- 240 premium credits/API signatures per year: covers API-created documents, public signing links, bulk sending, kiosk mode, and embedded signing
- Webhooks: real-time event notifications for signature completion and document status changes
- Zapier integration: connect OpenSign to CRMs, HR systems, and workflow automators without custom code
- Custom email templates: tailor signing invitation and reminder communications to match your brand
- Automatic reminders: automated follow-up to pending signers
- Bulk send: distribute documents to up to 240 recipients per year
- Public signing links: generate links allowing anyone to initiate a signing session without a direct invitation
- Embedded signing: embed the signing experience within an external application
- Priority support: faster response times compared to the free tier
Premium Credits in Practice
The 240 premium credits per year on Professional works out to approximately 20 credits per month. For developers building lightweight API integrations, 20 API-driven signing actions per month covers moderate use. Teams regularly exceeding that threshold through API workflows, bulk sends, or embedded signing should evaluate the Teams plan (500 credits/year) or contact OpenSign about higher-volume options. Verify current credit consumption rates and any rollover behavior directly with OpenSign.
Best For
Developers building API integrations between OpenSign and a CRM, HR system, or document management tool. Individuals and small teams that need live API production access, webhooks, and automated reminders without paying per-user team fees. For fintech and insurance teams that need the signing experience embedded natively inside their own product with full CSS control, evaluate platforms built specifically for that architecture alongside OpenSign’s embedded signing capability.
Teams Plan: Organizational Management and Higher Volume
OpenSign’s Teams plan is $19.99/user/month and designed for organizations running signing workflows across multiple people, departments, or client groups.
Plan Summary:
- Price: $19.99/user/month
- Signing: Unlimited portal-based plus 500 premium credits/API signatures per year
- Teams and Organizations: Yes
- Template Sharing: With teams and individuals
- BYOC Storage: Yes
- Best For: Organizations with multi-team signing workflows and shared template requirements
What the Teams plan adds over Professional:
- Teams and Organizations: structured team hierarchy for managing users across departments, projects, or client groups
- Template sharing: share templates with teams and individual users for standardized, consistent workflows
- BYOC storage: bring your own cloud storage provider for completed documents and organizational data
- Document ID removal: remove OpenSign’s document ID from signed documents for cleaner client-facing outputs
- Kiosk mode: enable shared-device signing for in-person workflows
- 500 premium credits/API signatures per year: higher annual cap for API-driven and advanced signing workflows (up from 240 on Professional)
Teams Plan Cost in Practice
At $19.99/user/month, Teams plan costs scale with headcount. A 5-user team pays approximately $100/month; a 10-user team pays approximately $200/month; a 25-user team pays approximately $500/month. Organizations above 25 users should evaluate whether Enterprise pricing or a self-hosted deployment (with a paid self-hosted API plan) delivers better value once per-user fees compound. Contact OpenSign sales for Enterprise pricing options.
Best For
Organizations with 2 or more users managing signing workflows across departments where template sharing, organizational hierarchy, and higher premium credit volume are active requirements. Legal, accounting, and HR teams managing standardized document workflows across multiple team members.
OpenSign Free Plan and Self-Hosted Access
OpenSign’s Free cloud plan is permanent with no time limit or credit card required. A self-hosted deployment is available under an open-source license with free software and no recurring subscription fee, subject to important API limitations.
Free cloud plan specifics:
- Signing: Unlimited portal-based, permanent
- Credit card: Not required
- API access: Sandbox tokens for testing; live tokens require paid plan
- Premium credits: Not included
Self-hosted specifics:
- Software license: Free (open-source)
- Infrastructure cost: Varies by provider, region, storage, and reliability requirements
- API token generation: Not supported on the free self-hosted version
- API in self-hosted: Requires a paid self-hosted plan for production API access
- Prerequisites: Docker, MongoDB, Node.js runtime environment
The distinction between sandbox and live API access applies equally to cloud and self-hosted deployments. Teams evaluating self-hosting for API automation should confirm paid self-hosted plan pricing with OpenSign before planning integration architecture.
OpenSign’s Premium Credits Model
OpenSign uses premium credits as the consumption unit for advanced signing actions beyond standard portal-based workflows. Understanding which actions consume credits is essential for accurate plan selection.
Which Actions Consume Premium Credits
Standard portal-based signing (creating documents through the interface, sending requests, and downloading completions) does not consume premium credits. The following actions consume premium credits on paid plans:
- API-created documents and signing requests
- Public signing links
- Bulk sending
- Kiosk mode signing
- Embedded signing
Credit Allocations by Plan
- Free: No premium credits included
- Professional: 240 premium credits/API signatures per year (approximately 20 per month)
- Teams: 500 premium credits/API signatures per year (approximately 42 per month)
- Enterprise: Custom allocations
Planning Credit Usage
Teams building primarily portal-based workflows with occasional API actions should evaluate whether Professional’s 240 annual credits cover their expected volume before upgrading from Free. Teams with consistent API-driven workflows or embedded signing requirements should model expected monthly credit consumption against the Teams plan’s 500-credit annual cap. Confirm credit rollover behavior and any overage terms directly with OpenSign before committing to a plan tier.
OpenSign Pricing vs Competitors
OpenSign vs DocuSign
OpenSign’s Free plan offers unlimited portal-based signing at $0 with no envelope cap. DocuSign Personal is $10/month, Standard is $25/user/month, and Business Pro is $40/user/month, billed annually; Standard and Business Pro annual plans include up to 100 envelopes per user per year, with monthly plans including up to 10 envelopes per user per month. DocuSign offers 1,000+ cloud-based integrations with Salesforce, Google, Microsoft, and more. OpenSign provides a cost-accessible alternative for teams whose workflows center on portal-based signing and do not require DocuSign’s enterprise integration depth.
OpenSign vs SignWell
SignWell offers a Free plan with 1 sender, 1 template, and 3 documents per month; Light at $10/month; Business at $30/month with 3 senders; and Enterprise at custom pricing. SignWell is suited for non-technical teams that want a fully managed, compliance-ready solution with a clean interface. OpenSign’s Free plan provides higher signing volume at $0, making it more cost-effective for teams with regular document workflows that do not need SignWell’s managed simplicity.
OpenSign vs Adobe Sign
Adobe Acrobat Standard is listed at US$14.99/month for the annual, billed-monthly plan. For teams, verify Acrobat Standard and Pro pricing directly on Adobe’s business pricing page. Adobe Sign integrates natively with Adobe Acrobat and the Microsoft 365 ecosystem for organizations already in that stack. OpenSign serves teams that do not need the Adobe ecosystem integration and want a lower-cost or open-source signing option.
OpenSign vs Verdocs
Verdocs is the most developer-focused embeddable eSignature platform for teams building signing directly into their own applications. Verdocs is built on an API-first design with 60+ native web components (React, Angular, Vue, vanilla JS, Node.js, TypeScript) and full CSS control for white-label in-app signing. Verdocs supports both native web components and iframe options, with web components recommended for deeper styling and framework-native integration. Open-source SDKs (MIT license), SOC 2 Type I certification, 2048-bit RSA encryption, HSM key storage, and PKI digital certificates address the security and compliance requirements development teams verify before integration. The free tier includes full live API access and 25 envelopes per month with no credit card required.
API and Developer Pricing on OpenSign
OpenSign provides two levels of API access: sandbox tokens available on all plans including Free, and live production tokens available on paid Professional and Teams plans. The free self-hosted version does not support API token generation; a paid self-hosted plan is required for production API use in self-hosted deployments.
What OpenSign’s API Supports
- Programmatic document creation and template population via REST endpoints
- Signer routing and field configuration via API calls
- Webhook-based status notifications (document opened, signed, completed)
- Embedded signing: embed a signing experience within an external application
- Public signing links: generate links for self-initiated signing sessions
- Bulk send: distribute documents to multiple recipients via API
Embedded Signing Considerations
OpenSign’s embedded signing consumes premium credits on paid plans. Teams building applications where end users sign documents inside their own product UI should evaluate how deeply the embedded signing experience can be customized relative to their design system requirements. OpenSign’s portal-redirect signing model routes signers to an OpenSign-hosted page; embedded signing via the API keeps the experience within the host application but consumes premium credits. Platforms offering self-serve developer tiers with native web components allow teams to prototype fully embedded workflows with full CSS control before entering procurement.
OpenSign Self-Hosted: Costs and API Limitations
OpenSign’s self-hosted deployment is available under an open-source license. The software is free to download and deploy. Two critical API limitations apply: the free self-hosted version does not support API token generation, and production API use requires a paid self-hosted plan.
Self-Hosted Infrastructure Requirements
Self-hosting OpenSign requires Docker for containerized deployment, MongoDB for the database layer, Node.js runtime environment, and a domain with SSL/TLS certificate. Infrastructure costs vary by provider, region, storage configuration, email setup, backup, and security requirements. OpenSign’s documentation provides Docker-based self-hosting instructions; consult those directly for current configuration requirements.
Self-Hosted vs Cloud Cost Comparison
Self-hosting eliminates per-user subscription fees but introduces engineering overhead: initial setup time, ongoing maintenance, security patching, and incident response. For teams without in-house DevOps capacity, the engineering time cost often exceeds the Teams cloud plan cost once hours are factored at standard developer rates. Self-hosting makes the strongest economic case for organizations that already operate containerized infrastructure and can absorb OpenSign maintenance at near-zero marginal time cost.
Best For
Organizations with genuine data residency requirements that specify self-managed infrastructure, and technical teams with existing Docker and MongoDB capacity who can absorb the maintenance overhead. Teams whose primary motivation for self-hosting is API access should note that a paid self-hosted plan is required; the free self-hosted version does not provide that capability.
Final Verdict
OpenSign’s pricing model is well-matched for a specific buyer. Here is how to decide without a sales call.
For teams choosing OpenSign:
- For individual users and small teams with standard portal-based signing needs: The Free plan at $0 delivers unlimited signing with no envelope cap, unlimited document storage, and completion certificates. No credit card required. It is a sustainable long-term option for teams whose workflows stay within the portal interface.
- For developers and individuals needing live API integration: Professional at $9.99/month (annual) is the entry point, covering 240 premium credits/API signatures per year alongside webhooks, Zapier, bulk send, public links, and embedded signing.
- For organizations with multi-team workflows and template sharing requirements: Teams at $19.99/user/month adds Teams and Organizations hierarchy, template sharing, BYOC storage, kiosk mode, and a 500-credit annual cap for higher API and advanced signing volume.
For teams where an alternative is the better fit:
- For developers embedding signing natively into their own application: Verdocs is purpose-built for this use case, with 60+ native web components, full CSS control over every signing UI element, a permanent free tier with full live API access and no premium credit cap, and open-source SDKs (MIT license). OpenSign’s embedded signing consumes premium credits and routes through OpenSign’s hosted environment.
- For legal, insurance, real estate, and accounting teams building regulated document workflows: Verdocs provides industry-specific embedded eSignature with full document lifecycle management, purpose-built for regulated signing workflows inside practice management or client portal software.
OpenSign’s unlimited free portal signing is genuinely competitive for teams that do not need API integration. When live API access, embedded signing with native component control, and a permanent no-credit-cap developer tier matter, evaluate API-first alternatives before committing to OpenSign’s premium credit model.
Start for free and launch your first embeddable eSignature workflow today.
Frequently Asked Questions
Is OpenSign’s free plan actually unlimited?
OpenSign’s Free plan includes unlimited portal-based signing with no monthly envelope cap, unlimited document storage, and unlimited guest signers. The free tier is permanent with no credit card required. API-driven, public-link, bulk, kiosk, and embedded signing actions consume premium credits, which are only available on paid plans. Sandbox API tokens for testing are available free; live production API tokens require Professional or Teams.
What does the OpenSign Professional plan include?
OpenSign Professional starts at $9.99/month when billed annually. It adds live production API access with up to 240 premium credits/API signatures per year, webhooks, Zapier integration, custom email templates, automatic reminders, bulk send up to 240 documents, public signing links, embedded signing, and priority support. Verify current monthly billing pricing directly on OpenSign’s pricing page.
Does OpenSign self-hosting include free API access?
No. The free self-hosted version of OpenSign does not support API token generation. Production API use in self-hosted deployments requires a paid self-hosted plan. Sandbox API tokens for testing are available on the Free cloud plan. Teams evaluating self-hosting specifically for API automation should confirm paid self-hosted plan pricing with OpenSign before planning their integration architecture.
What are premium credits on OpenSign?
Premium credits are the consumption unit for advanced signing actions on OpenSign’s paid plans. Standard portal-based signing does not consume credits. API-created documents, public signing links, bulk sending, kiosk mode, and embedded signing all consume premium credits. Professional includes 240 credits per year; Teams includes 500 credits per year. The Free plan does not include premium credits.
What is the best OpenSign alternative for developers building embedded signing?
For development teams embedding eSignature into their own applications, Verdocs is purpose-built for that use case. Verdocs provides 60+ native web components and iframe options, with web components recommended for deeper framework-native integration and full CSS control. The free tier includes full live API access and 25 envelopes per month with no credit card required and no premium credit cap. The platform is SOC 2 Type I certified with open-source SDKs under MIT license. For fintech, legal, insurance, real estate, and accounting teams building embedded document workflows, Verdocs’ native web component model provides deeper framework-native control than redirect-based or iframe-only approaches.