Netflix/lemur

Repository for the Lemur Certificate Manager

1,771

stars

6,948

commits

Python

primary language

Jul 6, 2026

updated

aws
python
security
ssl
ssl-certificates
tls
Browse cluster: TLS/SSL and Cryptographic Libraries

README

Lemur
=====

.. warning::

   This repository is now archived and read-only as of July 6, 2026.

   No new pull requests, issues, or contributions will be accepted. Existing content will remain available and publicly accessible, but this repository is no longer actively maintained. If you need to continue making changes, please fork this repository.

   Thank you to everyone who has contributed over the years.

.. image:: https://badges.gitter.im/Join%20Chat.svg
   :alt: Join the chat at https://gitter.im/Netflix/lemur
   :target: https://gitter.im/Netflix/lemur?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge

.. image:: https://readthedocs.org/projects/lemur/badge/?version=latest
    :target: https://lemur.readthedocs.io
    :alt: Latest Docs

.. image:: https://img.shields.io/badge/NetflixOSS-active-brightgreen.svg

.. image:: https://coveralls.io/repos/github/Netflix/lemur/badge.svg?branch=main
    :target: https://coveralls.io/github/Netflix/lemur?branch=main



Lemur manages TLS certificate creation. While not able to issue certificates itself, Lemur acts as a broker between CAs
and environments providing a central portal for developers to issue TLS certificates with 'sane' defaults.

Lemur aims to support the 3 most recent python releases which have been released for at least a year. For example, if python3.14 released last month, we'd aim to support versions 3.10, 3.11, 3.12, and 3.13.
We deploy on Ubuntu 22.04 and develop mostly on OS X.


Project resources
=================

- `Lemur Blog Post <http://techblog.netflix.com/2015/09/introducing-lemur.html>`_
- `Documentation <http://lemur.readthedocs.io/>`_
- `Source code <https://github.com/netflix/lemur>`_
- `Issue tracker <https://github.com/netflix/lemur/issues>`_
- `Docker <https://github.com/Netflix/lemur-docker>`_

Not written in Markdown, so it's shown here as plain text — view it formatted on GitHub.

Contributors

(top 30 of 123)

hosssha

1,216 commits

dependabot[bot]

1,203 commits

kevgliss

797 commits

jtschladen

574 commits

Netflix/lemur

Repository for the Lemur Certificate Manager

1,771

stars

6,948

commits

Python

primary language

Jul 6, 2026

updated

aws
python
security
ssl
ssl-certificates
tls
Browse cluster: TLS/SSL and Cryptographic Libraries

README

Lemur
=====

.. warning::

   This repository is now archived and read-only as of July 6, 2026.

   No new pull requests, issues, or contributions will be accepted. Existing content will remain available and publicly accessible, but this repository is no longer actively maintained. If you need to continue making changes, please fork this repository.

   Thank you to everyone who has contributed over the years.

.. image:: https://badges.gitter.im/Join%20Chat.svg
   :alt: Join the chat at https://gitter.im/Netflix/lemur
   :target: https://gitter.im/Netflix/lemur?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge

.. image:: https://readthedocs.org/projects/lemur/badge/?version=latest
    :target: https://lemur.readthedocs.io
    :alt: Latest Docs

.. image:: https://img.shields.io/badge/NetflixOSS-active-brightgreen.svg

.. image:: https://coveralls.io/repos/github/Netflix/lemur/badge.svg?branch=main
    :target: https://coveralls.io/github/Netflix/lemur?branch=main



Lemur manages TLS certificate creation. While not able to issue certificates itself, Lemur acts as a broker between CAs
and environments providing a central portal for developers to issue TLS certificates with 'sane' defaults.

Lemur aims to support the 3 most recent python releases which have been released for at least a year. For example, if python3.14 released last month, we'd aim to support versions 3.10, 3.11, 3.12, and 3.13.
We deploy on Ubuntu 22.04 and develop mostly on OS X.


Project resources
=================

- `Lemur Blog Post <http://techblog.netflix.com/2015/09/introducing-lemur.html>`_
- `Documentation <http://lemur.readthedocs.io/>`_
- `Source code <https://github.com/netflix/lemur>`_
- `Issue tracker <https://github.com/netflix/lemur/issues>`_
- `Docker <https://github.com/Netflix/lemur-docker>`_

Not written in Markdown, so it's shown here as plain text — view it formatted on GitHub.

Contributors

(top 30 of 123)

hosssha

1,216 commits

dependabot[bot]

1,203 commits

kevgliss

797 commits

jtschladen

574 commits

Languages

Python

83.3%

HTML

15.4%