CertKit
SSL/TLS certificate lifecycle automation for Windows, JKS and appliances — discover, renew, deploy, monitor
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certkit.ioAbout CertKit
CertKit is SSL/TLS certificate lifecycle management for IT teams, aimed at the environments ACME clients never covered well: Windows servers, Java keystores, and network appliances where a renewed certificate still has to be copied somewhere and a service restarted. It discovers certificates across your infrastructure, issues and renews them, deploys them to the endpoints that need them, and monitors what is live — without scripts, cron jobs or a 2am expiry alert. The timing argument is real rather than manufactured: the 200-day maximum certificate lifetime is now in effect, so renewals that used to happen annually happen twice a year, and a 47-day maximum is scheduled for 2029, at which point manual renewal stops being a process and becomes a liability. The deployment targets are the differentiator — Windows environments including Always On VPN over SSTP and DirectAccess over IP-HTTPS are called out specifically, along with JKS keystores and appliances, and the product carries an endorsement from a Microsoft MVP consultant in exactly that space. Alongside the platform there is a set of free standalone tools — certificate decoder, PEM decoder, CSR generator, free certificate and wildcard certificate generators, and certificate-transparency log search — usable without an account. The company reports over 1,000 IT teams using it, and every plan includes a 90-day free trial, long enough to watch a full renewal cycle happen automatically before paying.
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Key Features
CertKit Pros & Cons
✅ Pros
- +Covers the Windows, JKS and appliance targets that ACME clients handle badly
- +90-day trial is long enough to verify an automated renewal actually fires
- +Shortening certificate lifetimes make the problem structurally worse over time
⚠️ Cons
- −$99/mo for 10 certificates is expensive next to free ACME tooling on Linux
- −Per-certificate and per-agent overages add up fast in large estates
- −SSO and audit logs are gated behind the $399/mo Business tier
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