AlertSleep is unclaimed —

AlertSleep

Sleep Soundly. We Watch Your Uptime·alertsleep.com

AlertSleep is an uptime and infrastructure monitoring service that checks websites, APIs, servers, ports, and SSL certificates around the clock. When downtime or issues are detected, it sends instant alerts via SMS, phone call, email, Slack, or webhook, typically within 60 seconds. It also offers public status pages and free diagnostic tools such as an uptime checker, SSL checker, and DNS lookup.

What it's for

Website uptime monitoringAPI/GraphQL endpoint monitoringSSL certificate expiration monitoringTCP/UDP port monitoringPage speed/performance monitoringPublic status pagesPost-deployment verification via CI/CDFrontend performance monitoringMonitoring third-party dependencies

Features 18

API monitoring (REST & GraphQL, custom headers, authentication, response validation)
Authentication support (OAuth, JWT, API keys, Basic Auth)
Free diagnostic tools (Uptime Checker, SSL Checker, DNS Lookup, Port Checker, Response Time Test, Domain Expiration Checker, Redirect Checker, Sitemap Tester, Robots.txt Tester, Cron Generator)
Global check locations (North America, Europe, Asia)
Microsoft Teams integration
Multi-location verification to reduce false positives
Multi-step API checks with variable passing and conditional logic
Page speed / performance monitoring (Core Web Vitals)
PagerDuty integration
Port monitoring (TCP/UDP)
Public status pages
REST API access
Slack integration
SSL certificate monitoring with alerts 30/14/7 days before expiry
Telegram integration
Webhook notifications
Website monitoring (HTTP/HTTPS checks from multiple global locations)
WhatsApp integration

At a glance

free tierAPI

TypeWeb app

DeploymentCloud

PlatformsWeb

LanguagesEnglish, German, French, Spanish, Polish, Portuguese, Czech

Forstartups, small businesses, developers, agencies, e-commerce owners, DevOps engineers, SaaS companies, freelancers, support teams, business owners

CompanyCodity Patryk Filipiak

Integrations

SlackTelegramMicrosoft TeamsWhatsAppPagerDutyGitHubGitLabPostmanVercelNetlifyHerokuDiscordVS CodeDockerAWS

Complianceself-reported

GDPR

Resources

Pricing

Enterprise plan is custom/quote-based (Contact Sales). 30-day money-back guarantee stated. Free plan available forever, no credit card required.

FreeFree

No credit card required, free forever

5 monitors, 5-minute check interval, 10 email alerts/month, 100 push notifications, 30-day data retention

Basic$5/mo

Marked as Most Popular

20 monitors, 1-minute check interval, 90-day data retention, 5 team members

Professional$10/mo

No per-seat pricing for team members

50 monitors, 1-minute check interval, unlimited team members, 1-year data retention

EnterpriseQuote

Quote-based, contact sales

Unlimited monitors, custom intervals

Annual plans include a 20% discount.