Dev tools · alternatives · 2026

24 alternatives to CertMate

SSL Certificate Management System (API + UI + MCP + CLI)

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1
Mkcert – Valid HTTPS certificates for localhost▲839
2019 · blog.filippo.io · its alternatives →
2
Certopus▲70
Design & deliver verifiable certificates
2022 · certopus.com · its alternatives →
3
Bearer CLI▲174
Free & open source security scanner for developers
2023 · cycode.com · its alternatives →
4
lcl.host▲308
Get HTTPS in your local dev environment
2024 · lcl.host · its alternatives →
5
Kilo SSL Pro▲80
Multi-Instance SSL certificate management system
2021 · docs.kilossl.com · its alternatives →
6
Kubernetes Certificate Manager – Native Let's Encrypt Integration▲186
Manage Lets Encrypt certificates for a Kubernetes cluster. - kelseyhightower/kube-cert-manager
2016 · github.com · its alternatives →
7
DNSimple CLI▲99
Manage Your DNS from the Command Line with DNSimple CLI
May 2026 · dnsimple.com · its alternatives →
8CS
CertStream – See SSL certs as they're issued in real time▲142
2017 · certstream.calidog.io · its alternatives →
9
I made a script to generate self-signed SSL certs for local development▲107
A bash script for generating trusted self-signed SSL certs for local development on your Mac - kingkool68/generate-ssl-certs-for-local-development
2018 · github.com · its alternatives →
10
SSOReady▲144
Open source developer tools for enterprise single sign-on
2024 · github.com · its alternatives →
11
Caddy, a cross-platform HTTP/2 web server▲208
Caddy is a powerful, enterprise-ready, open source web server with automatic HTTPS written in Go
2015 · caddyserver.com · its alternatives →
12
Bearer Cloud▲115
Manage product and application code security at scale
2023 · cycode.com · its alternatives →
13
Certo – An open source platform to deliver Open Badges▲17
Certo is open-source infrastructure for issuing, managing, verifying, and exchanging digital credentials. It implements Open Badges 3.0[1] and W3C Verifiable Credentials[2] which are the open standards that make credentials portable, machine-verifiable, and vendor-independent. It is designed to be: - Self-hosted: run it inside your own infrastructure, air-gapped network, or sovereign cloud - Standards-compliant: credentials it issues work with any OB3/VC-compatible system - API-first: everything the UI can do, the API can do - Exportable: your data is always yours, in open formats -…
Aug 2026 · github.com · its alternatives →
14
Kilo SSL▲126
Automatic SSL management solution for SaaS providers
2020 · docs.kilossl.com · its alternatives →
15
CertRadar – Find every certificate ever issued for your domain▲21
Free tools for SSL/TLS certificate transparency search, configuration analysis, and security monitoring.
Jan 2026 · certradar.net · its alternatives →
16
A Let's Encrypt Certificates Manager for Kubernetes▲14
A Let's Encrypt certificates manager for Kubernetes - math-nao/certs
2019 · github.com · its alternatives →
17
Passport Protocol▲111
Programmable and distributed key management network
2023 · 0xpass.io · its alternatives →
18
SSL Montior▲77
Free SSL monitoring app for macOS
2023 · its alternatives →
19
termique▲90
A free SSH client for Mac, Windows and Linux. Every host in one place, with end-to-end encrypted sync, SFTP, SSH key management, and an AI terminal assistant.
Jun 2026 · termique.app · its alternatives →
20TC
TinyCert – Certificates as a service▲46
2014 · tinycert.org · its alternatives →
21
Lego – A Let's Encrypt Library and CLI in Go▲93
Let's Encrypt/ACME client and library written in Go - go-acme/lego
2015 · github.com · its alternatives →
22
Blockchain CLI▲98
A minimal blockchain command-line interface.
2017 · github.com · its alternatives →
23
Step-ca is a self-hosted open-source CA that supports ACME▲10
🛡️ A private certificate authority (X.509 & SSH) & ACME server for secure automated certificate management, so you can use TLS everywhere & SSO for SSH. - smallstep/certificates
2019 · github.com · its alternatives →
24
Octopus mini▲71
Simple SSL monitoring.
2020 · apps.apple.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →