12happy
12happy is a hosted uptime-monitoring service for websites, APIs, and servers. It checks endpoints using HTTP(S), keyword, ping, and TCP port checks, and offers heartbeat monitoring for scheduled jobs on paid plans. It confirms detected failures from a second location before sending alerts and distinguishes slow responses from downtime. Notifications include email, Slack, Telegram, and Android push, with SMS, signed webhooks, escalation policies, and maintenance windows on paid plans. Teams can publish public or password-protected status pages with incident updates and 90 days of uptime history. Teams get role-based access, audit logs, scoped API keys, and two-factor sign-in; agencies can manage clients in separate workspaces. Plan limits and check intervals vary by plan.
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PageLantern
PageLantern is website, API, and uptime monitoring software for small teams, agencies, SaaS operators, and website owners. Monitor HTTP/HTTPS endpoints, APIs, SSL certificates, domain expiration, DNS records, TCP services, heartbeat and cron jobs, and critical browser flows from one workspace. PageLantern records response times and availability, creates incidents automatically, routes alerts to team channels, and provides hosted public status pages. Multi-location checks help teams identify regional failures and slowdowns. The free plan includes 15 monitors, five-minute checks, 30 days of history, one status page, and one alert channel with no credit card required. Paid plans add faster checks, browser monitoring, longer history, additional users, reports, and more status pages.
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FourSight
FourSight is multi-region uptime monitoring built to stop alert fatigue. Every check runs from four regions (US, Canada, Europe, Asia-Pacific) and a quorum-based consensus policy confirms an outage from more than one region before anyone is paged, so a single flaky vantage point never wakes you at 3 AM. Eight check types cover HTTP/uptime, keyword/content, SSL certificate expiry, DNS drift, domain expiry (RDAP), ping latency, TCP/UDP port checks and heartbeat monitoring for cron jobs and backups. Alerts go out by email, Slack, HMAC-signed webhooks and SMS, with escalation policies and maintenance windows to keep noise down. Public status pages are included on every tier (white-label with custom domains on Scale), plus incident management with timelines, multi-user organizations with roles, and uptime/latency history with regional breakdowns.
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Uptime Tracker
Uptime Tracker monitors websites, APIs, servers and scheduled jobs around the clock, rechecking failures before sending alerts to help distinguish outages from brief network errors. It supports HTTP(S) and keyword checks, SSL certificates, TCP ports, DNS records, ping, domain expiry, authenticated API tests with JSON assertions, multi-step API workflows, gRPC, SMTP, IMAP and heartbeat monitoring for cron jobs and backups. Alerts can be routed through rules to email, SMS, Slack, Microsoft Teams, Discord, Telegram, Google Chat, PagerDuty, Pushover, ntfy, Gotify, Mattermost, Rocket.Chat and webhooks, with on-call schedules and escalation. The service includes incident timelines, maintenance windows, reports and hosted status pages on custom domains. Individuals, developers, SaaS teams, agencies, freelancers, online stores and small businesses can use it to monitor services and communicate availability. A free plan includes two monitors; paid plans start at $9 per month.
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