Certly icon
Certly icon

Certly

Certly monitors SSL certificates, domain registration expiry, and DNS/DNSSEC across all your sites — and alerts you on Slack, Discord, email, or webhook before anything lapses, so you never find out from your customers.

Dashboard — every site's SSL, domain, and DNSSEC expiry at a glance, with a color-coded OK / Warning / Critical summary and a cross-site feed of recent DNS changes.

Cost / License

  • Freemium (Subscription)
  • Proprietary

Application type

Platforms

  • Online
Monitors — add any hostname and pick what to watch (SSL, domain, or both). Each row shows SSL, domain, and DNSSEC expiry side by side, flagging recent DNS changes.
Monitor detail — unified expiry view for domain registration, SSL certificate, and DNSSEC signature, plus a chronological DNS activity timeline and the current DNS record snapshot.
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Notifications — route alerts to email, Slack, Discord, or a custom webhook, and enable or disable each channel independently.
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Features

  1.  Dark Mode
  2.  Supports SSL Certificates
  3.  Uptime Monitoring
  4.  SSL

 Tags

Certly News & Activities

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Certly information

  • Developed by

    JP flagIncreoScale

  • Licensing

    Proprietary and Freemium product.

  • Pricing

    Subscription ranging between $10 and $32 per month + free version with limited functionality.

  • Alternatives

    2 alternatives listed

  • Supported Languages

    • English

AlternativeTo Categories

Network & Admin, Development

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Certly was added to AlternativeTo by IncreoScale on and this page was last updated .
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What is Certly?

Certly monitors SSL certificates, domain registration expiry, and DNS/DNSSEC across all your sites — and alerts you on Slack, Discord, email, or webhook before anything lapses, so you never find out from your customers.

Unlike tools that rely on issuance records, Certly checks what your server actually serves, catching failed auto-renewals before browsers show certificate warnings.

Key features: • SSL certificate monitoring — expiry, issuer, and hostname (CN/SAN) matching, verified against what the server actually presents • Domain expiry monitoring — registration expiry via RDAP (RFC 9083) • DNS monitoring — tracks A, AAAA, CNAME, MX, NS, and TXT records, with a change timeline and severity flags (e.g. MX loss or NS change marked critical) • DNSSEC monitoring — RRSIG signature expiry and validation status, distinguishing healthy auto-rotation from stalled or expired signatures, plus SERVFAIL detection • Staged alerts at 30, 14, 7, and 1 day before expiry, giving you runway to act • Multi-channel notifications: email, Slack, Discord, and generic webhook • Tunable DNS alerts — mute or set to critical-only per monitor • Client grouping for agencies managing many customer sites

Agentless and Cloudflare-native: monitoring runs over DNS-over-HTTPS with no agents to install. Built entirely on Cloudflare Workers.

Plans: a free tier (2 sites, daily checks, email alerts), Pro ($12/mo — 25 sites, 6-hour checks, all channels, DNS monitoring, 90-day history), and Business ($39/mo — 150 sites, 1-year history, DNS history, client groups).

Official Links