Let's Encrypt

Free SSL/TLS certificate authority

78
Warning · 78/100
Automated health estimate

The score summarizes repository activity. Funding is unknown and excluded from the score. These repository signals do not establish financial stability, security, or maintainer availability. How to interpret this data.

Funding
Unknown
Maintenance
Active
Contributors
Many observed
Bus Factor
Medium risk
Metrics last updated: (2026-10-25)

Evidence and limitations

Activity source: letsencrypt/letsencrypt via the GitHub API. Counts describe this repository, which may be a mirror or only part of the project.

Commits in 30 days
11
Commits in 90 days
25
Authors accounting for half the sampled commits
2

The sampled commit history reached the 90-day boundary or the end of the repository history.

Few commits can reflect mature software. Commit authors do not establish merge rights, available maintainers, organizational diversity, or knowledge distribution. Funding is unknown; donation links alone do not establish income or runway.

Correct this assessment or provide evidence →

Ways to help Let's Encrypt

We have not yet checked this project's specific support needs.

Read the repository's contribution and security guidance before proposing work.

Suggest a support route with an official source.

Overview

Let’s Encrypt is a nonprofit certificate authority providing free TLS certificates to more than 300 million websites, making HTTPS accessible to everyone.

Importance

  • Powers encryption for millions of websites
  • Democratized HTTPS adoption
  • Foundation for web security
  • Critical for privacy online

Key Features

  • Free certificates
  • Automated issuance (ACME)
  • 90-day certificates
  • Wildcard support

Sustainability

Financial sustainability and maintainer capacity have not yet been reviewed against current primary sources. See the evidence and support sections above for available information and a way to suggest corrections.

Dependencies

Let's Encrypt
system

Impact Analysis

0 Direct Dependencies
0 Dependent Projects