Certbot

Overview

Certbot is free, open-source software from the Electronic Frontier Foundation for automating Let’s Encrypt certificates on websites you administer. Its command-line approach makes it a practical fit for server administrators who want HTTPS certificate setup and renewal handled alongside their web server. The trade-off is that it expects access to the server itself, making it a poor match for most shared hosting.

Key features

Certbot can obtain a certificate from a certificate authority and install it on a web server automatically in many cases. It supports Apache and Nginx integrations, plus webroot and standalone methods. That gives administrators several ways to handle certificate setup, but the command-line workflow still assumes comfort managing the server.

Automatic renewal runs when less than one-third of a certificate’s lifetime remains, or when half remains for certificates lasting 10 days or less. That reduces the need to track renewal dates manually. Deployment automation and revocation workflows are supported; certificate discovery is not, so Certbot is focused on obtaining and managing certificates rather than finding them across an environment.

DNS validation does not require Let’s Encrypt to make an inbound connection to the server. As a result, this method does not require an existing HTTP site or an open port 80, which can help where those conditions are unavailable. Certbot usually runs on a Unix-like server, and most users access it remotely over SSH.

Pricing

Certbot costs nothing. The free plan includes the open-source software and its Let’s Encrypt certificate automation, with no free trial because there is no paid plan to evaluate. That makes it a straightforward choice for administrators seeking certificate automation without a software fee; the cost is the server access and command-line administration the workflow requires.

Platforms

Certbot is listed for Linux, macOS, self-hosted environments, and Windows. Its typical workflow is on a Unix-like server, often reached over SSH, so the platform list does not change its basic requirement: users need to administer the web server where certificates are installed.

Who it's for

Certbot suits people comfortable with the command line who run a website on a dedicated server, VPS, or cloud-hosted server. It is most compelling when they want certificate installation and renewal automated without paying for software. For most shared hosting users, asking the hosting provider to configure HTTPS is usually easier and more reliable.

Pros and cons

Pros

• Free and open source: Certificate automation comes without a software charge, making it accessible to administrators on any budget.
• Automated renewal: Renewing based on remaining certificate lifetime reduces manual date tracking.
• Multiple setup methods: Apache, Nginx, webroot, standalone, and DNS validation give administrators options for different server circumstances.
• DNS validation flexibility: It can work without an existing HTTP site or open port 80.

Cons

• Requires server administration: The command-line workflow is a hurdle for users who cannot manage their own server.
• Weak fit for shared hosting: Provider-managed HTTPS is generally easier and more reliable in that environment.
• No certificate discovery: Certbot does not provide this capability, limiting its role in environments that need to locate certificates across systems.

Alternatives

Certificate Management Software is a useful category page for comparing other tools in this area.

• Certify The Web is worth considering if its free evaluation or freemium model better fits your selection process; it supports a wider range of listed platforms, including API and web.
• Qualys External Attack Surface Management may suit users who want to try a freemium product with a 30-day no-cost plan, rather than Certbot’s free, open-source server workflow.
• Oracle Cloud Infrastructure Secret Management is an alternative for readers seeking a free secrets-management product with API and web platforms.
• AWS Certificate Manager offers a free public-certificate plan for integrated AWS services; choose it if that AWS-specific scope fits better than managing certificates through Certbot.
• KeyTalk CKMS is a paid option with a trial and support for mobile, desktop, Linux, and self-hosted platforms.
• Entrust Certificate Manager is a paid alternative for readers considering a commercial certificate management product.
• ManageEngine Key Manager Plus is a freemium alternative with a trial and an on-premises license for 25 managed keys at $59 a month.
• Keyfactor Platform is a paid option with a trial for readers considering certificate lifecycle automation.

Verdict

Choose Certbot if you administer your own server and want free, open-source automation for obtaining, installing, and renewing Let’s Encrypt certificates. Its renewal automation and multiple validation methods are useful strengths. Look elsewhere if you rely on shared hosting or need certificate discovery; provider-managed HTTPS is the more suitable route for most shared hosting users.