Hesklo — Developer Tools

What is Hesklo?

Hesklo is a unified uptime monitoring and on-call escalation platform. It watches your websites, APIs, and infrastructure, and when a check fails, it automatically runs your team's escalation policy—routing the incident to the right person at the right time through tools you already use (like Slack, PagerDuty, or SMS). This eliminates the need to juggle separate monitoring and on-call tools, giving you a single source of truth during an outage.

Who is it for?

Hesklo is designed for engineering teams and DevOps professionals who need reliable detection and response for their production systems. It's ideal for teams that want to streamline incident management without building complex custom integrations. If you're a solo developer or a small team, the free plan offers 3 monitors with 5-minute checks—perfect for keeping tabs on critical side projects.

Key capabilities

Hesklo supports four check types (HTTP, ping, TCP, SSH) and offers a visual escalation canvas to design policies with branching, waits, and time gates. It includes integrations with Slack, Discord, Teams, Email, SMS, PagerDuty, Jira, and Webhook—all available on every plan. Paid plans add a public status page, and Team and Business plans include on-call scheduling and more team seats. With 30-second minimum check intervals and 180-day history on higher tiers, it's built for serious production use.

Who is it not for?

Hesklo is not a general-purpose monitoring tool for network infrastructure or database performance deep-dives. It focuses on endpoint/API availability and alerting, not metrics collection or log analysis. If you need full-stack APM or log management, you'd pair Hesklo with a dedicated tool.

• Uptime monitoring — Monitor HTTP, ping, TCP, and SSH endpoints from EU-hosted infrastructure, with failure confirmation across consecutive checks.
• Escalation policies — Build visual, multi-step escalation flows with branching, wait times, and schedule gates, ensuring the right person gets notified.
• 8 alert destinations — Send alerts to Slack, Discord, Teams, Email, SMS, PagerDuty, Jira, or Webhook—all included on every plan.
• Public status page — Keep stakeholders informed with a customizable status page (on paid plans) showing real-time monitor status.
• On-call scheduling — Manage rotations and shift assignments directly in Hesklo (Team and Business plans).
• Automatic incident resolution — When a monitor recovers, incidents and tickets close automatically, and outage history is recorded for postmortems.
• SSL certificate tracking — Each HTTPS check includes SSL expiry monitoring, so you can renew before it lapses.

Hesklo pricing: from $7/mo (free plan available). Billing model: Freemium.

For comparison: the median starting price in Developer Tools is $19.99/month, measured across 301 tools we track. See the full SaaS Pricing Index →

Free — $0

• 3 monitors
• 5-minute check interval
• 7-day history
• All integrations (Slack, Discord, Teams, Email, SMS, PagerDuty, Jira, Webhook)
• No public status page

Essential — $7/mo

• 10 monitors
• 1-minute check interval
• 30-day history
• Public status page

Pro — $19/mo (Most popular)

• 50 monitors
• 1-minute check interval
• 90-day history
• Public status page

Team — $49/mo

• 150 monitors
• 30-second check interval
• 180-day history
• 10 team seats
• On-call scheduling

Business — $149/mo

• 500 monitors
• 30-second check interval
• 180-day history
• 25 team seats
• On-call scheduling

All plans include all eight integrations. Cancel any time. No credit card required for free plan.

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