endesive m32/endesive

Pure-Python library to create and verify certificate signatures in PDFs, S/MIME email, XML (XAdES) and plain files, with PKCS#11/HSM support.

Creator kit + Compare GitHub ↗ Install guide (official) ↗

endesive at a glance

Checked 16 Oct 2026

endesive (277 stars, 2.19.3 Jan 2026, commits to Sep 2026) is a Python 3.11+ library for developers. It adds Adobe-compatible CMS/CAdES signatures to PDFs with optional TSA timestamps and OCSP data, verifies them, and also signs S/MIME, XAdES and plain data, including through PKCS#11 hardware. MIT, but it ships some pyfpdf-derived code under LGPL-3.0. There is no app, CLI or web UI: you write Python. No sending to signers, tracking or templates.

Cite this pageRepoQuarry. “endesive.” Checked 16 Oct 2026. https://repoquarry.dev/projects/endesive

How much of DocuSign does it replace?

1 of 6 jobs. Developer library for certificate signatures inside your own code; no end-user app or signing workflow.

Send documents for signature Not covered

Signing order and reminders Not covered

Audit trail and completion certificate Not covered

Reusable signing templates Not covered

eSignature API and embedded signing Not covered

Certificate-based digital signatures (PKI) Partial replacement

For send documents for signature, signing order and reminders, audit trail and completion certificate, reusable signing templates, eSignature API and embedded signing, see other DocuSign alternatives. You may also need to build an interface, an API server and hosting yourself.

Facts, with sources

Every answer links to where we found it. We read the documentation; we did not install it.

Report a correction

QuestionAnswerSourceChecked

Runs on my machine? Yes, Python library used in your own code endesive is a Python library for creating and verifying digital signatures in: github.com · endesive#readme ↗ today

Code licence MIT, with bundled pyfpdf-derived code under LGPL-3.0 (LICENSE.pyfpdf) license-files = ["LICENSE", "LICENSE.pdf-annotate", "LICENSE.pyfpdf"] github.com · pyproject.toml ↗ today

Model weights licence No separate model weights github.com · endesive#readme ↗ today

Commercial use Yes; MIT, plus LGPL-3.0 conditions for the bundled pyfpdf code GNU LESSER GENERAL PUBLIC LICENSE github.com · LICENSE.pyfpdf ↗ today

Paid services needed? None required; you supply certificates or an HSM; TSA and OCSP are optional PDF signing and verification with optional TSA timestamping and OCSP data github.com · endesive#features ↗ today

Hardware Not documented beyond Python 3.11+ Know the answer? —

Operating systems README documents Python 3.11+, cryptographic dependencies and PKCS#11/HSM integration; no Windows/macOS/Linux support matrix was found there. Hardware token support must also be checked separately Python requirement: **3.11+** github.com · endesive#installation ↗ today

Setup effort Easy for Python developers; pip install, then write code pip install endesive github.com · endesive#installation ↗ today