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ctSignature review

#17 of 28 in Electronic Signature APIs

A focused API-first signing platform for white-label, multi-tenant deployments.

7.9/10Editor score
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

ctSignature combines a no-code dashboard with a REST API for businesses that need electronic-signature workflows. Teams can upload PDFs, place fields with drag-and-drop tools, send documents, track signing activity, and reuse templates. Its strongest fit is for software providers and organizations building branded signing experiences, particularly where multi-tenant isolation and white-label sender branding matter.

Pricing spans monthly subscriptions and one-time document bundles. Starter costs $29 per month and includes the no-code dashboard and REST API access. Pro costs $99 per month and adds webhooks, reusable templates, and embedded signing. Enterprise includes unlimited documents per month, unlimited users, REST API access, webhooks, reusable templates, and embedded signing. For lower-volume usage, Pay-As-You-Go-10 costs $10 one time for 10 documents, while Pay-As-You-Go-75 costs $50 one time for 75 documents. The published plans show no free plan.

The product’s technical scope is centered on signing workflows and embedded deployment. Its REST API uses JSON endpoints, webhook events include retries, and iframe-based embedded signing supports branded experiences. Workflows can be sequential, parallel, or hybrid, while tamper-evident audit trails use cryptographic document hashing. ctSignature is a strong choice for teams prioritizing API access, reusable signing flows, and white-label deployment. Organizations seeking broad third-party integrations or a free entry tier should consider another option.

ctSignature pros and cons

  • Where it wins
    • Pay-as-you-go options start at $10 for 10 documents
    • Embedded signing, webhooks with retries, and reusable templates
    • Supports sequential, parallel, and hybrid multi-signer workflows
  • Where it doesn't
    • There is no free plan
    • Starter does not include webhooks or embedded signing
    • The platform focuses on web and API access rather than broad integrations

ctSignature fact sheet, pricing and score →

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