Docuseal

DocuSeal is an e-signature platform built for individuals, small teams, and developers who need legally binding document signing without paying DocuSign or PandaDoc prices. You can upload PDFs, DOCX, XLSX, or image files, build custom form fields, and send signing requests by email in minutes. Signatures comply with ESIGN, UETA, eIDAS, and other international regulations.

The cloud version is free for individuals and scales to business plans with branding, team access controls, and SAML SSO. Self-hosting is also an option, giving you full control over where documents and signatures are stored. That matters for GDPR, HIPAA, and any organization that can't send sensitive data to a third-party cloud.

For developers, DocuSeal is particularly well-equipped:

• REST API and SDKs covering JavaScript, Python, Ruby, PHP, Java, C#, and Go, so you can trigger signature requests programmatically from any backend
• Embeddable web components that drop a signing form directly into your web app or mobile app (Android, iOS, React Native, Flutter) without redirecting users elsewhere
• Webhook support for event-driven workflows when documents are completed or declined
• Automation integrations with Zapier, Make.com, n8n, and Power Automate for no-code workflow triggers
• Custom branding on emails and signing forms, sent from your own Gmail or Outlook account

Security certifications include SOC 2, ISO 27001, HIPAA compliance, and GDPR-compliant EU cloud hosting. Multi-party signing, role-based access, phone verification via SMS, and audit trails are all included.

If you're comparing open source DocuSign alternatives, DocuSeal sits alongside tools like Documenso and OpenSign, but its developer tooling and embeddable components make it a strong fit when signing needs to live inside your own product rather than as a standalone portal.