Open Source PDF Signature Software Without Per-Document Fees
DocuSign charges €0.85 to €3.50 per envelope. DocuSeal costs €30 flat per month, or free if you self-host. Sign unlimited documents, own your data, export anytime.
Open Source PDF Signature Software on Opsily
Stop paying per signature. Start owning your signing infrastructure.
Transparent, Flat Pricing
DocuSign hides costs in per-envelope fees. Opsily's DocuSeal: one price, unlimited documents. Sign 100 a month or 10,000. The bill stays the same. No surprises, no overages, no negotiations with vendor.
GDPR-First by Design
Self-host DocuSeal on German servers under GDPR. No US cloud, no data transfers, no compliance headaches. Every signature stays in your jurisdiction. Audit logs ready for regulators. Control who sees what.
Open Source, Never Locked In
Full source code on GitHub. Audit the security yourself. Export all your data anytime in standard formats. Switch platforms tomorrow if you want. No vendor lock-in. No surprise licensing fees after you've invested.
Built for teams who need reliability
DocuSeal vs DocuSign: Cost Comparison
The numbers tell the story. Let's look at what 100 signature requests cost each vendor per year.
DocuSign pricing as of 2026. Opsily Small plan (€30/mo) includes all features. Costs calculated for 100 signatures per month.
The Open Source Advantage
Open source PDF signature software gives you three things proprietary vendors won't: transparency, control, and trust.
Transparency You Can Verify
DocuSign's code is closed. You trust it because they say so. DocuSeal is open on GitHub. Security researchers, your own team, or third-party auditors can read every line. No backdoors. No hidden licensing terms buried in updates. If something's wrong, you see it.
Control Over Your Data
DocuSign stores signatures on US servers. Moving to EU? Compliance problem. Need to modify the signing workflow? Locked out. With DocuSeal on Opsily, you host in Germany, control the infrastructure, and customize as needed. Export your data anytime in standard formats. Vendor lock-in doesn't exist.
GDPR Without Legal Risk
EU businesses face a choice: pay DocuSign's premium for GDPR compliance or handle the complexity yourself. DocuSeal self-hosted is GDPR-native. German data centers. Full audit trails. Compliance officers sleep better.
Why 152K Teams Chose It
Cost is one reason. Control is another. But the biggest wins come from teams who ditched per-signature pricing and realized they could move the same money from operations to growth. A team signing 5,000 documents per year saves €3,600 switching from DocuSign. At scale, it's the difference between hiring or not.
Get Started in Minutes
From zero to signing documents without DevOps overhead.
Choose Your App
Select an app to get started.
Deploy in your Opsily dashboard
Click 'Install DocuSeal.' It's live in 3 minutes. No configuration, no CLI commands, no server setup.
Build a template
Drag signature fields onto your PDF. Add text boxes, checkboxes, initials. No coding required. Save and reuse instantly.
Send for signing
Email the template link, embed it in forms, or trigger via API. Recipients sign in their browser. Mobile-friendly. No plugins.
Archive with proof
Signed PDFs land in your account with audit logs, timestamps, and IP addresses. Legally binding. Legally provable.
Everything Included
No feature gatekeeping. Every team gets the core toolkit to manage signing workflows at scale.
View all pricingSimple, Transparent Pricing
All plans include GDPR-compliant German hosting, daily backups, and full API access. Scale from startup to agency without renegotiating contracts.
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Built on Trust and Standards
Security, compliance, and transparency backed by open source and international standards.
GDPR Compliant
Self-hosted on German servers. No US cloud providers. Data stays in your jurisdiction. Full compliance audit trails included.
Legally Binding Signatures
Compliant with eIDAS (EU) and ESIGN Act (US). Courts recognize DocuSeal signatures. Audit logs prove signing intent and timestamp.
Open Source (11.7K Stars)
Full source code on GitHub. Auditable by your team or third parties. No hidden algorithms. No surprise license changes.
Self-Host or Managed
Run DocuSeal free on your own servers. Or let Opsily handle infrastructure, backups, and updates for a flat €30/month.
Enterprise API Ready
Integrate with CRM, forms, ERP, or workflow tools. Trigger signing from any application. No per-API-call fees.
Frequently Asked Questions
Get answers to common questions about DocuSeal, open source e-signatures, and GDPR compliance.
DocuSeal is the most mature open source PDF signature platform. It has 11.7K GitHub stars, is used by 152K+ businesses, and supports all core signing features: multi-party workflows, legally binding signatures, audit trails, and API integration. The key advantage over competitors like Documenso or OpenSign is DocuSeal's production maturity and pre-built Opsily integration. For teams wanting a managed solution without DevOps overhead, Opsily's hosted DocuSeal at €30/month eliminates the complexity of self-hosting.
Stop Overpaying for E-Signatures
Join 152K teams using open source DocuSeal. No setup fees. No per-signature surcharges. Start signing today.