Alternatives
Products that do what Certopus does
Design & deliver verifiable certificates
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2017 · certstream.calidog.io
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- 8TC
2014 · tinycert.org
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2018 · github.com
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2021 · certifysimple.app
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Create your free email signature with our easy-to-use tool.
2019
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2016 · sslmate.com
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- 21CF
We’ve been managing web infrastructure for a long time. For most of that time, certificate management meant buying a cert, copying it to wherever it needed to go, and setting a calendar reminder. That works when certificates last a year. It stops working when lifetimes drop to 47 days. Certbot is the obvious answer but it doesn’t cover everything. It requires ACME on each server, which means each server needs to be internet-reachable or have DNS provider access. That rules out Windows servers, JKS keystores, and appliances that can’t run Certbot or speak ACME at all. CertKit handles ACME…
Apr 2026 · certkit.io
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Back in 2012 I built https://cert-depot.com as a weekend project. Node.js + Express + jQuery, shelling out to OpenSSL for certificate generation. It worked but I eventually let it rot. https://news.ycombinator.com/item?id=4766743 Rewrote it from scratch in Go. The entire thing is a single binary with no external dependencies: 1. Certificate generation uses Go's crypto/x509 (no OpenSSL) 2. Certificates are generated in memory and streamed directly — nothing is stored on the server 3. RSA 2048/4096 and ECDSA P-256/P-384 4. Subject Alternative Names…
Apr 2026
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