SimpleSSL
Certificate toolkit for macOS — built for developers and IT professionals.
Key & CSR Generation
Generate RSA and ECDSA private keys and certificate signing requests on-device.
Build Bundle
Assemble certificate chains and PEM bundles from individual certificate files.
Chain Checker
Validate live TLS certificate chains directly from your device to any domain.
ACME Certificate Manager PRO
Automate certificate issuance, renewal, and export without leaving your Mac. Let's Encrypt & ZeroSSL (by Sectigo), DNS-01 via Cloudflare, Namecheap & manual, CNAME alias, auto-export to .key, .crt, -chain.pem, -fullchain.pem. Also includes Sectigo ACME with custom keys & URLs, and Sectigo SCM API.
- Everything in Free
- iCloud sync for ACME profiles across your Macs
- ACME — Let's Encrypt & ZeroSSL (by Sectigo)
- DNS-01 via Cloudflare, Namecheap, manual & CNAME alias
- Auto-export to .key, .crt, -chain.pem, -fullchain.pem
- Sectigo ACME with custom keys & URLs
- Sectigo SCM API
🔒 Privacy
All certificate operations run entirely on your device. Keys, CSRs, and credentials never leave your Mac — credentials are stored in your macOS Keychain. No analytics, no telemetry.
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