Compare the Top eSignature APIs as of April 2026

What are eSignature APIs?

eSignature APIs are software interfaces that allow developers to integrate electronic signature capabilities directly into applications, websites, or workflows. They enable users to sign documents digitally without printing, scanning, or physically handling paperwork. These APIs support legally binding signatures and often comply with global regulations such as eIDAS, ESIGN, and UETA. Developers can automate document workflows, request signatures, track status, and store signed files programmatically. eSignature APIs are widely used in industries like finance, healthcare, legal, and HR to streamline approvals and reduce turnaround time. Overall, they help businesses digitize document processes, improve efficiency, and enhance user experience. Compare and read user reviews of the best eSignature APIs currently available using the table below. This list is updated regularly.

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    Legalesign

    Legalesign

    Legalesign

    Legalesign is UK-based enterprise software to send, sign and manage documents online. Companies use Legalesign to gain significant productivity and financial benefits, increase their customers' satisfaction by removing the need for a printer and enabling them to sign from anywhere and, last but not least, relieve the burden of tiresome paperwork upon long suffering staff everywhere.
    Starting Price: £6.00 ($9.00)
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