About this category

E-signature tools formalize agreements quickly, from client contracts to internal HR documents. You'll find 11 products here, all designed to secure legally binding electronic signatures. They help speed up business processes.

When evaluating these tools, consider how they handle document routing and audit trails. Formstack's E-Signature, for example, offers automated routing and detailed audit trails for compliance. DocuSeal and TurboDocx both provide public APIs for custom integrations, useful for unique workflow needs.

Look for direct PSA integrations to avoid manual data entry. ZenContract integrates with both Autotask PSA and ConnectWise PSA. PandaDoc stands out with its Halo PSA integration and offers MCP support, making it a strong contender for managed service providers.

Products

11
AI & automation
eSignatures.io logo

by eSignatures.io

eSignatures.io offers an API for developers to integrate e-signature functionality into their applications and workflows.

APIResell
Updated Nov 1, 2026
Dropbox logo

by Dropbox

Dropbox e-signature service for preparing, sending, signing and tracking legally binding agreements.

Resell
Updated Nov 6, 2026
TurboDocx logo

by TurboDocx

E-signature tool for sending legally binding PDFs with audit trails, usable standalone or with TurboDocx document and quote automation.

Use
Updated Oct 22, 2026
DocuSeal logo

by DocuSeal

Open source document signing tool for legally binding eSignature requests via email, API or embedding, with SAML SSO and cloud or on-premise hosting.

AIAPI
Updated Nov 1, 2026

Docusign service for sending, signing and managing documents electronically.

AIResell
Updated Nov 1, 2026
Formstack logo

by Formstack

Formstack Sign collects legally binding e-signatures, with automated routing and custom branding, alongside Formstack Forms and Docs.

AIResell
Updated Nov 5, 2026
eSignatures.io logo

by eSignatures.io

Pay-per-use eSignature platform with a one-request API, Zapier, ChatGPT and Claude integrations, plus SMS, WordPress and bulk sending.

AIResell
Updated Nov 1, 2026
AirSlate logo

by AirSlate

E-signature plans for teams with legally binding signatures, unlimited templates, mobile apps for iOS and Android, and free unlimited users.

Resell
Updated Oct 29, 2026
TurboDocx logo

by TurboDocx

Document generation, quote and e-signature tool with AI agents in Slack and Teams and standalone TurboSign e-signatures.

AIAPIUse
Updated Oct 24, 2026

Cloud-based, API-driven service adding trusted digital signatures and timestamps to document workflows without extra security hardware.

Resell
Updated Oct 29, 2026
AirSlate logo

by AirSlate

airSlate DocHub online tool for editing, filling in and signing PDF documents.

Resell
Updated Oct 31, 2026