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Overmonitor is a cloud-based infrastructure, website, and endpoint monitoring platform built for fast setup without enterprise complexity. Monitor websites, APIs, servers, processes, Windows services, event logs, performance counters, SNMP data, uptime, response time, DNS, SSL certificates, internal endpoints, and network health from one dashboard. The lightweight 2.1 MB agent runs as an idle process, requires no inbound firewall exceptions or open ports, and sends a secure heartbeat every minute. Configure monitoring quickly through the web interface and target checks by city-level geography. Maintenance windows suppress expected noise, while configurable alerts, push notifications, and audible dashboards keep the right people informed. Multi-location endpoint checks validate incidents, reduce false alarms, expose regional problems, and reveal how availability and responsiveness differ across target markets. Distributed Monitors expand Overmonitor’s network by allowing eligible servers to opt in and check up to 10 external endpoints. Checks add negligible data to the existing heartbeat, require no extra configuration or firewall changes, execute no remote web scripts, and store no monitored data on the server. If a participating server or network becomes unavailable, its checks are automatically reassigned. Participation also earns prorated invoice credits. Trend Analysis turns historical infrastructure metrics into proactive capacity planning. Choose from thousands of performance counters, including CPU utilization, available memory, and disk space, then assign minimum and maximum thresholds. Once enough data has been collected, Overmonitor applies linear regression to estimate when a metric may cross its limits. A configurable planning horizon controls when responsible team members are alerted, helping you rebalance workloads, tune resources, or scale capacity before performance becomes an outage or unbudgeted emergency. Trend Analysis is included with every server metric at no additional charge. Overmonitor also includes process rollups, embeddable performance graphs, endpoint health visibility, flexible retention, multiple users with roles, and à la carte pricing so you pay only for the monitoring you need. Detect outages, correlate website symptoms with server health, analyze performance, track availability, and improve end-user experience before small issues become downtime.

Uptime.com provides comprehensive, unified visibility into the availability and performance of critical services. Monitoring tools empower engineering, operations and SRE teams to maintain oversight of their web stack and respond to outages through customizable alerting channels. Uptime.com offers a broad set of monitoring capabilities, including web, network, and email. API and transaction checks offer synthetic monitoring to perform multi-step validations of critical flows and services. Monitor public and private resources through a unified interface that streamlines configuration and alerting. Set up and customize Status Pages with your company branding to communicate incidents and maintenance to both customers and internal teams. Provide a single-page overview that shows your overall service health at a glance. Robust and customizable SLA reporting allows stakeholders to stay informed on incidents and downtime.

UptimeRobot is a website monitoring service with a forever free plan that lets you register with just an email and monitor up to 50 websites, servers, or keywords with 5-minute intervals. Setup takes only a few clicks. For faster checks and advanced features, paid plans offer 1-minute or 30-second intervals, along with SSL certificate, domain expiry, and heartbeat (cron job) monitoring. You can also create up to 100 status pages, customize them to match your brand, protect them with a password, and allow subscribers to receive updates. Get notified instantly via email, SMS, voice calls, or integrations with Slack, Zapier, PagerDuty, Splunk On-Call, Telegram, Webhooks, Discord, Mattermost, Pushbullet, Microsoft Teams, Google Chat, Pushover, and more. Mobile push notifications are available through the iOS and Android apps. Other features include maintenance windows, incident tracking with root cause analysis, tags, comments, and filters. Share account with other team members.

Pulsecima Pulse is a hosted uptime and response-time monitoring service for websites and HTTP endpoints. It checks URLs from Virginia, Ireland, and Singapore, and confirms an incident only when at least two fresh regions report a failure. This regional confirmation helps teams distinguish service outages from failures observed by a single monitor. Features include public status pages, maintenance windows, SSL-expiry and response-time alerts, uptime reports, and alert routing through email, Slack, webhooks, and PagerDuty; Slack and webhooks are available on Basic and Pro, while PagerDuty is available on Pro. Basic and Pro plans include heartbeat monitoring for cron jobs and scheduled tasks, using a unique ping URL to detect missed check-ins. The service is aimed at developers and teams responsible for websites, APIs, SaaS services, and scheduled jobs. A free plan covers up to three monitored URLs; paid plans are billed per active URL.

Zunoy Uptime is a website and API monitoring solution designed to help businesses maintain service reliability and quickly detect downtime. The platform continuously monitors websites, web applications, APIs, and online services, providing real-time visibility into availability and performance. Users receive instant alerts when outages, slow response times, or service disruptions occur, enabling faster incident response and reduced downtime. The platform includes uptime tracking, response time monitoring, historical performance reports, and customizable notification settings. Teams can monitor multiple endpoints from a centralized dashboard and track service health over time. Zunoy Uptime is suitable for developers, DevOps teams, SaaS providers, digital agencies, and organizations that depend on always-available online services.

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.

RealUptime combines four hosted reliability tools in one account: Status for public status pages and incident updates; Monitor for external HTTP, TCP, DNS and heartbeat checks plus server monitoring; Errors for application error tracking; and Outages, a public directory of checks for widely used services. Monitoring checks run from multiple regions, with regional results visible so teams can distinguish location-specific failures. Monitor can collect server metrics through an agent, while alerts and incident workflows help teams respond to service issues. Errors groups application events into issues for investigation. The platform also provides a REST API, command-line interface, Terraform provider, GitHub Actions workflow and MCP server for developer workflows. Free plans are available for Status, Monitor and Errors, and public Outages checks can be viewed without an account; paid plans add usage capacity and features.

UptimeMonk is uptime monitoring and incident intelligence software for online services and scheduled jobs. Check HTTP/HTTPS endpoints, SSL/TLS certificates, domain expiry, DNS records, TCP ports, ping/ICMP, cron jobs, heartbeats, and browser page rendering. Multi-region verification confirms failures before incidents open. Probable-cause diagnostics, evidence timelines, latency data, and recovery tracking speed investigation. Map upstream and downstream dependencies, identify critical paths, correlate overlapping incidents, and review evidence-linked impact summaries. Signed GitHub and GitLab deployment webhooks add nearby releases to incident timelines without repository access. Publish branded public status pages with live component health, incident updates, maintenance notices, and availability history. UptimeMonk provides scheduled maintenance, configurable alerts, on-call escalation, email, chat and webhook integrations, team roles, audit history, SLA reports, and CSV exports.

Most uptime monitors only check if your server responds. upsonar goes further — it loads your page and discovers every external dependency: CDN-hosted files, third-party scripts, web fonts, and API endpoints. If any of them fail, you get alerted before your users notice. Availability checks run from multiple global regions simultaneously, so regional CDN failures and localized outages don't go undetected. Beyond uptime, upsonar monitors SSL certificates approaching expiration, tracks domain expiry dates to prevent renewal failures, and detects DNS record changes that could indicate unauthorized modifications. All five monitoring types work together in one dashboard. Notifications reach you through email, Telegram, or webhooks compatible with Slack, Discord, and PagerDuty. Get started free with 3 websites — all features included, no credit card needed.

Sentinel is a hosted monitoring service for websites, APIs, and network services. It runs HTTP/HTTPS, JSON/API, keyword, SSL certificate, DNS, domain expiration, ping, TCP port, cron job, and heartbeat checks, with response-time data and public status pages. Checks can run as often as every 15 seconds from 15 locations across six continents, with multi-location confirmation for outage alerts. Teams can receive notifications through email, SMS, Slack, Microsoft Teams, Discord, Telegram, PagerDuty, and webhooks. Sentinel also provides a REST API, command-line tools, a Terraform provider, and an MCP server for automation. A free plan is available, while paid plans start at $14 per month; plans include API access and do not charge per seat. The service is intended for developers, DevOps and SRE teams, and businesses that need to monitor service availability.

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.

rhealth.dev is an uptime monitoring platform designed to reduce alert noise and speed up incident response. It monitors websites, APIs, cron jobs, TCP services, and internal systems from up to 40 global locations, confirming failures across regions before alerting. This eliminates false positives caused by temporary or local network issues. Unlike traditional monitoring tools that only say “down,” rhealth.dev sends actionable alerts with exact failure reasons such as timeouts, connection errors, slow responses, or content mismatches. Key capabilities 1. Website & API uptime monitoring 2. Response time and performance tracking 3. SSL certificate expiry alerts 4. Keyword and partial-failure detection 5. Cron job & background task monitoring 6. TCP and database port checks 7. Private network monitoring using Docker-based checkers Free plan includes 1. 20 monitors 2. Unlimited team members 3. Unlimited status pages 4. No credit card required

CheckoutAlarm is a hosted monitoring service for founders and independent makers running applications that accept payments through Stripe. It periodically loads a selected website page and checks its response status, speed, and whether an expected page title or phrase is present. For Stripe, it monitors undelivered webhook events and disabled endpoints, and can alert when sales activity stalls. Before monitoring begins, site ownership is verified using a DNS record, a meta tag, or a verification file. CheckoutAlarm sends email alerts after two consecutive page-check failures and a recovery notice when the check succeeds again; Stripe alerts are also sent by email. The Free plan checks one site daily. Pro checks up to three sites hourly for $19 per month. CheckoutAlarm helps identify website availability and Stripe payment-delivery problems through scheduled monitoring.

Uptime monitoring, cron job monitoring and eye candy hosted status pages in a single tool for your business. Everything you need to keep your business running without interruption. WebGazer enables you to monitor websites and REST API endpoints. It checks the service's status by sending an HTTP request with a configurable frequency and sends a notification immediately if an issue is detected. In order to prevent alert fatigue, WebGazer does additional checks when an incident is detected and fires the notification only if the incident is verified by these additional checks. Get notified instantly via e-mail, webhook, PagerDuty, Slack, SMS and phone calls when an incident occurs. Check services' status as frequently as every 60 seconds! Too much? You can set it as low as 24 hours. Poor performance can be an indicator of a forthcoming disaster. Catch the performance issues before they turn into incidents.

Pulsetic is an uptime and website monitoring platform for businesses, developers, ecommerce teams, and agencies that need fast outage detection and clear incident communication. It monitors websites, APIs, IPs, SSL certificates, ping, ports, TCP services, keywords, cron jobs, and domains from up to 15 global locations to help localize outages and reduce false positives. Features include instant alerts via email, SMS, phone calls, Slack, Discord, Telegram, Microsoft Teams, Twilio, Zapier, webhooks, and API workflows, plus real-time dashboards, status badges, response-time insights, historical uptime logs, PDF and image reports, and long-term monitoring history. Pulsetic also includes public or private status pages, custom domains, branding, multilingual status updates, subscriber notifications, incident timelines, scheduled maintenance notices, custom email sender options, teammates, password protection, 2FA, and SSO.

The Simplest Websites Monitoring with built-in Status Pages. The Next Generation Of Distributed Monitoring System with instant alerts to Slack and Zapier that helps to keep your infrastructure Highly Available. Expect the unexpected with Statlix. Statlix helps you take a more scientific and measured approach to website availability: Monitor website uptime. You can quickly configure uptime monitoring systems for all selected URLs you manage. Check status real-time. View daily uptime statistics that provide more accurate snapshots of website performance. Ensure availability. Statlix has helped our clients monitor and maximize uptime affordably and reduce outages and unavailability! Alert to status changes. Alert them to scheduled maintenance and of progress with fixes by configuring your own customized status pages. Customers can sign up to receive status updates. Receive quality reports Receive notifications when problems arise by email, SMS, RSS, custom WebHooks, Slack, etc.

Every minute of downtime costs money, reputation, and users. AlertSleep watches your services around the clock and alerts you the moment something breaks — so you can fix it fast. 🔍 What AlertSleep does: • Monitors websites, APIs, and services every 1 minute • Sends instant alerts via Email, Slack, Telegram, Teams, WhatsApp, SMS, or Voice call • Tracks response times and uptime statistics • Creates public Status Pages to keep your users informed • Logs every incident with timeline and recovery time 🆓 Free forever plan: • 5 monitors (check every 5 min) • 1 public status page • Email alerts included • No credit card required 💼 Who it's for: • Indie developers who can't afford enterprise tools • Startups that need reliability without complexity • Agencies managing client websites • Small businesses with online presence 🌍 Available in 7 languages: English, German, French, Spanish, Polish, Portuguese, Czech

SENTRAVA AI is a web-based website monitoring service for WordPress care-plan agencies and managed IT providers responsible for client websites. It checks sites on a schedule for HTTP availability, response time and SSL certificate status, then sends email alerts for confirmed downtime and recovery, plus SSL expiry reminders. Eligible paid plans support one-minute checks, and reminders are sent 30, 14, 7 and 1 days before expiry. Teams can review check history, assign incident ownership and add timestamped troubleshooting notes. SENTRAVA AI prepares client-facing incident reports with optional AI-assisted drafts for staff to edit and approve, and exports white-label PDFs on paid plans. Team roles and an audit trail support shared workflows. Monitoring runs externally using a site's web address, without a WordPress plugin, and supports WordPress, Shopify, Wix, Webflow and custom sites.

Greenbar is a hosted uptime-monitoring service for freelancers and small web agencies that manage client websites. Users organize monitored URLs by client and check them over HTTP or HTTPS against expected response codes, with optional keyword checks to catch error pages that return a successful status. Email alerts are available on every plan; paid plans add Slack and signed-webhook alerts. Each client gets a public status page with current service states and incident history; monitor URLs remain private. Paid plans offer client logos and brand colors and allow the Greenbar footer to be hidden. Free includes one client page, five monitors and five-minute checks, with seven-day check history. Freelancer includes 10 client pages and 50 monitors; Agency includes 30 client pages, 150 monitors and up to three logins. Paid plans offer one-minute checks and 90-day check history. New accounts receive $100 in free credit, and no payment card is required to start.

Unless you are a robot, it is infeasible for you to keep checking your website to see if it is available. Leave this tedious job to our automated service, and enjoy peace of mind. We support ping, HTTP, HTTPS, FTP, SSH, SMTP, DNS, POP3, IMAP, MySQL, and any arbitrary services running on TCP/IP. No complicated software to install; all you need is a web browser. We monitor your websites and servers from a network of 54 worldwide monitoring stations. Knowledge is power, that's why we provide you all the information you need about the uptime and performance of your websites and servers in easy-to-read reports and graphs. Public report is also available. Be the first to know when your website or server is in trouble! We notify via email, SMS and push notification. You can define one-time and recurring maintenance windows to pause uptime checks. We will not send you downtime alerts on planned outages.

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.

We check your servers and routers continuously, ensuring that you are the first to know when an outage or slowdown occurs. Detect hard connection failures, equipment lockups, and operating system failures within seconds. Every few seconds we request a response from your server. We conduct a rigorous protocol test at your preferred monitoring interval. If one of our stations detects a problem, we check again from two more locations. If you’re down, we notify you by call, text, email or 3rd party integration. You can connect your Alertra account with other 3rd party applications like Slack, PagerDuty, Pushover and OpsGenie to centralize event logging and alerting. That way you can intelligently notify the right person with the right communication tool to quickly address a specific downtime situation.

The Server Check Monitoring System continually monitors your websites and other internet-based services (Ping, SMTP, IMAP, FTP, etc.) and makes sure you're the first to know when there's an outage. Don't lose any more visitors to downtime. Our FREE 10-monitor version of Server Check lets you get started with monitoring in less than five minutes completely free! Get alerted as soon as something stops working: visual alerts, audible alarms, emails and SMS texts to as many admins as you need. Server Check makes sure you know about it so you can fix it! Quick setup of all common protocols, including HTTP & HTTPS, Ping, FTP, SMTP, POP3, IMAP, TCP, MySQL. Monitor them all and stay ahead of any long outages that might lose customers! View statistics for each monitor, response time graphs, outage length reports, web-based stats and uptime pages, and keep track of uptime and downtime over the last 12 months.

CertPing is an AI-powered observability and security platform that helps organizations protect their online presence by continuously monitoring website uptime and response times, managing SSL/TLS certificates with automated issuance, rotation, and deployment, and detecting brand impersonation threats such as phishing, typosquatting, and look-alike domains. It consolidates uptime checks, SSL health analytics, incident communications via public status pages, and threat intelligence into a unified dashboard that displays real-time metrics, historical tracking, and alerts so teams can respond quickly to outages or security anomalies. CertPing’s brand defense capabilities proactively scan for unauthorized domain registrations and phishing attacks that could compromise user trust, and it incorporates workflows for trademark monitoring and assistance with legal filings through partners.

Site Qwality brings website monitoring and full-stack observability into one platform. Engineering teams can monitor uptime and APIs, run synthetic browser checks, track scheduled jobs, and watch SSL certificates, domains, and DNS. Logs, metrics, distributed traces, real user monitoring, and session replay help teams investigate what happened and how users were affected. Incident management, on-call workflows, alert integrations, and public status pages support the response when something goes wrong. Free allocations are included for each product, with paid capacity available separately. Current features, limits, and pricing are at siteqwality.com.

UpTimeTools.net is a comprehensive website monitoring service trusted by thousands to ensure unmatched uptime, speed, and reliability for websites and APIs. The platform offers real-time monitoring of website availability, API performance, and user experience through features like synthetic monitoring, real user monitoring (RUM), and private location monitoring. It provides instant multi-channel alerts via phone, email, SMS, and Slack to enable rapid response to downtime incidents. Users can create custom status pages to communicate incident updates and maintenance schedules transparently. UpTimeTools.net supports over 80 global monitoring locations and offers unlimited integrations and user accounts on premium plans. With detailed reporting and customizable dashboards, businesses gain critical insights to optimize website performance and customer experience.

ZnowPulse is hosted website, API and server monitoring by ZnowSoft. Check HTTP/S endpoints, TCP ports, ICMP ping, DNS records, keywords and SSL expiry. Nexus Points group checks into one service-health signal. Manage incidents and planned maintenance, and route alerts to your team’s tools. Free includes unlimited monitors, five-minute checks, 30 days of history, one Nexus Point and one user, with no card or expiry. Pro Yearly is US$59.99 billed annually, with checks as often as ten seconds, public status pages, teammates, unlimited Nexus Points, CSV/PDF reports and S3-compatible backups. Check intervals are plan features, not uptime or detection guarantees. Explore the actual dashboard interface with prepared sample data at the product website.

Uptimon is a monitoring SaaS that tracks website and API availability 24/7, detecting outages within seconds and sending instant alerts. It performs HTTP(S) pings at customizable intervals (30 seconds to 60 minutes), checking response time, status codes, keyword presence, and SSL certificate validity. When a site goes down, it instantly notifies via email, Discord, Telegram, webhook, or SMS.The dashboard displays real-time status, last 30-day uptime percentage, average response times, and performance graphs. Technical stack includes Node.js/Go backend, Redis queue, horizontal scaling support, and time-series databases like TimescaleDB.Target audience ranges from freelancers to enterprises. Key differentiators include simple setup (3 clicks), fast detection time, and affordable pricing. Uses freemium model with paid tiers based on monitor count and check frequency. Growth features include shareable status badges, public status pages, and partner integrations with Vercel/Netlify.

We help monitor your online services and catch issues & anomalies before they reach your end customers and become costly incidents! To detect outages, unexpected behavior & performance regressions. Minimize risk of losing customers, time, money & brand reputation. Our globally distributed monitoring probes check your publicly exposed web pages and web services via TCP or UDP protocols. We run millions of checks every day, 24/7. We have 6 years of experience in this field, our solution is mature, easy to use and very reliable. As an additional guarantee, we offer a service level agreement (SLA) option for our high-end monitoring plan(s). Measuring response times and uptime, checking for valid HTTP(S) response, ensuring page integrity with SHA-256 hash. Never forget to renew your web server certificate with our TLS / SSL monitoring. We will send periodic ping requests to your servers to check if they are alive.

StatusDrift is an uptime monitoring platform that watches your websites, APIs and infrastructure around the clock and alerts you the instant something drifts. Set up monitors in seconds with support for HTTP, HTTPS, ping, TCP port, SSL certificate expiry and keyword checks, all running from multiple regions so you can distinguish a real outage from a local blip. When a problem is detected, StatusDrift opens an incident automatically and gives you a full timeline - which regions were affected, how response times changed, and how long the issue lasted. You can acknowledge, investigate and resolve incidents right from your phone. Plan maintenance windows ahead of time so alerts stay quiet and your team knows exactly what's happening. The dashboard rolls up everything into a single view: monitors up, down, warning, paused or with expiring certificates, plus your latest incidents.

Visual Sentinel is a six-layer website monitoring platform for public websites, web applications, APIs, and client portfolios. It combines HTTP uptime, performance and Core Web Vitals, SSL certificate and domain expiry, DNS change detection, rendered browser screenshot comparisons, and critical content assertions. Visual Sentinel is designed to catch failures that ordinary ping monitors miss, including blank renders, missing CTAs, broken layouts, defacement, injected content, and unexpected page changes that still return 200 OK. Incident records keep the response, timeline, and visual evidence together. Teams can alert through email, Slack, Discord, Telegram, WhatsApp, Microsoft Teams, PagerDuty, Opsgenie, webhooks, and browser push according to plan. Additional features include server monitoring, API monitoring, status pages, client reports, Google and Cloudflare integrations, an Android companion, REST API, and MCP tools.

Everything you need for uptime monitoring. Monitor your website for free and get notified instantly when your website goes down. Ensure your website is available from anywhere in the world with monitoring from 10 global locations. Display your website uptime history to your customers with free public status pages. Monitor HTTP/HTTPS, ICMP Ping, TCP, UDP, Web socket or DNS. Whatever you’re building we’ve got you covered. Receive alerts wherever you are. Integrate Freshping with Freshdesk, Slack, Twilio, Skype, and Webhook to receive instant downtime notifications. Get weekly updates and measure your website's performance with metrics like Apdex score, Average response time, Individual Response Time & more. Showcase your website status right from your homepage. Display your website’s uptime history and current status of your website with Realtime Badges. Enjoy deeper control with String and Status code check. Don’t limit yourself to a single status code.

Downtime can happen on your servers and websites. Get notified instantly to take corrective steps. More than 800 users are already using Pinguzo to monitor servers and their websites. Join for free and check your server's health and websites uptime, availability, and performance. Monitor your websites uptime, load time, average response times, etc. Install the Pinguzo agent and get detailed server information and graphs. We can send alerts over e-mail, SMS, PagerDuty, Pushbullet, Slack, HipChat, web-hooks, etc. You can set various parameters like if the Load Time is high for X minutes alert me after every Y minutes. View detailed uptime, downtime reports and graphs of your response times. For servers, you can view detailed information of your CPU, RAM, disk, network usage, etc. We verify the downtime from multiple locations. Pinguzo has been tested on CentOS, Debian, Ubuntu, Fedora, Scientific Linux, RHEL, openSUSE, Slackware, Gentoo, Archlinux.

We monitor your websites, APIs, cron jobs, and scheduled tasks. Your team gets immediate alerts via email, SMS, Slack, PagerDuty, Incident.io, and more. You don't have to be an engineer to set it up. Simple and effective monitoring that lets you sleep a bit better at night. Check as often as every 30 seconds, and catch the issues that take your website down for less than a minute. You can configure the HTTP method, headers, and body for each check. OnlineOrNot runs every check at least twice before sending an alert, with options for even more. OnlineOrNot will check your SSL certificates for expiration and other issues, and alert you if there's a problem. You can choose to run uptime checks from one region, or all of them. Your customers rely on your products and services. Let them know your real-time status with an automatically updating status page. Add your customers as subscribers to your status page, and send consistent incident updates via email.

Pingvera is a website monitoring service for web agencies, studios and freelancers managing client sites. It brings multiple websites into one dashboard and checks availability, SSL certificates, domain expiry, broken links, suspicious redirects and search-indexing settings. Teams can configure form checks that submit test leads and verify email delivery when that check is configured, monitor WordPress health, and collect server metrics through an optional one-way agent. Alerts can be routed to email, Slack, Telegram or webhooks, while public status pages and incident history help teams share service status with clients. Paid plans add WordPress diagnostics, white-label branding and scheduled reports; the Business plan offers on-premises licensing on request. A free plan covers up to five sites, and paid tiers support larger portfolios. Check intervals start at one minute.

NorthDuty is website monitoring software built around user journeys. It runs your checkout, signup, login and contact-form flows in a real browser on a schedule and after every deploy, and alerts you the moment a step breaks, with the failing step and a screenshot. Journeys are AI-suggested from your site or described in plain English, so there is no scripting. Every project also includes status and health checks every 5 minutes (every minute on paid plans): uptime, response time, SSL and domain expiry, DNS, blank-page detection, broken resources, JavaScript errors and failed API calls on the page. Public status pages, incident tracking, PDF client reports and alerts to email, Slack, Microsoft Teams and more are included. NorthDuty is built for WordPress and WooCommerce agencies and store owners who need to know when a site is up but broken for customers. Free plan available; paid plans from $29/month.

Xitoring is an all-in-one monitoring platform for servers, websites, and status pages. One command installs the Xitogent agent (curl on Linux, MSI on Windows), auto-discovering 30+ services: Nginx, Apache, IIS, MySQL, PostgreSQL, MongoDB, Redis, Docker, RabbitMQ, Kafka, and more. Monitor CPU, memory, disk I/O, network, and processes, plus uptime checks (HTTP(S), Ping, DNS, TCP, UDP, API, Mail, Heartbeat, Cron) at 1-minute intervals from 15+ global probing nodes. SSL monitoring included. Alerts via 20+ channels: email, SMS, phone call, WhatsApp, Telegram, Slack, Teams, PagerDuty, Opsgenie, webhooks, and more. Built-in AIOps answers plain-English questions about your metrics and incidents. The Xitoring MCP server lets Claude, Cursor, or any AI agent read metrics, ack alerts, and manage monitors. Plus white-label status pages, incident management, REST API, and iOS/Android apps. Free forever: 2 servers + 8 uptime checks. Paid from $4.99/mo, flat pricing, 30-day trial.

Gatus is an advanced automated status page that lets you monitor your applications and configure alerts to notify you if there's an issue. Designed to monitor REST APIs, it's a perfect fit for overseeing your services. You can monitor for a specific status code or for a keyword in the response body. By prefixing the URL of an endpoint, you can monitor a given target using ICMP. Forget about worthless status pages that only show you the uptime over the past 90 days and fail to accurately dispel users' confused when even after checking the status page, they still don't know what's going on. Gatus is all about what's going on right now. Gatus offers details that no other status pages can match. Our status page is not just a toy for preventing your customers from spamming you, it's a powerful tool to help you run automated user acceptance tests and make sure that you know about a problem before your users do.

Odown is a website uptime monitoring tool that helps you maintain customer trust by tracking your website’s performance in real-time. Monitor uptime, availability, and speed, and receive instant alerts via email, Slack, Webhooks, SMS, Telegram, and Discord, so you can quickly address any issues. API & WEBSITE MONITORING Monitor your website and APIs to track uptime and response times across 17 global regions. Identify HTTP errors quickly through a user-friendly interface. PUBLIC STATUS PAGES Boost customer trust with real-time transparency. Easily set up a status page to share your website’s uptime status in less than a minute. INCIDENT MANAGEMENT Minimize the time spent on incident management, allowing you to focus on resolving issues quickly to keep your customers satisfied. SSL MONITORING Prevent lost visitors due to expired SSL certificates. Receive timely alerts before your SSL certificate expires, ensuring continuous security.

C9Pharos is a comprehensive website and web application monitoring platform that provides real-time insights and proactive alerts to ensure optimal site performance and availability. It continuously monitors website uptime, functionality, and user experience by simulating real user interactions and detecting issues before they impact end-users. C9Pharos offers multi-location monitoring, enabling businesses to check their websites' responsiveness and availability from different regions around the world. It includes advanced synthetic monitoring, allowing users to create complex, scripted tests to monitor critical workflows, transactions, and APIs. With instant alert notifications via email, SMS, and other channels, C9Pharos ensures that teams are immediately informed of any downtime or performance degradation. It also provides detailed analytics and reporting tools, helping businesses analyze trends, identify recurring issues, and improve overall site reliability.

HostTracker is a 24/7 website monitoring service that helps businesses and webmasters track availability, performance and security from over 300 global locations. With 13 monitor types, you can check HTTP/S, ping, TCP ports, transactions, web content, APIs, page speed, databases, server resources, SSL and domain expiry, plus Web Risk and DNS blacklist status. Track response times and page load speeds, receive scheduled reports, and get alerts via email, SMS, voice call, Telegram, Slack, Viber, Discord, web push or webhooks. Alert delays, active hours and maintenance windows help prevent unnecessary notifications. HostTracker also provides public status pages, a REST API and an MCP server for instant checks through AI assistants and developer tools. The free plan includes 2 monitors. Paid plans start at $10/month, with a 30-day trial including 100 monitors at 1-minute checks - no credit card required.

WPMissionControl provides comprehensive monitoring solutions for WordPress websites. Our services include uptime and response time monitoring, SSL certificate oversight, website health analysis, and integrity checks for core files, themes, and plugins. We offer real-time alerts via email, Slack, and SMS for premium users, along with malware cleanup services. Showcase your website’s performance and security with a public Status page and a Security Badge. Ensure your WordPress site remains secure, reliable, and optimised with WPMissionControl.

quietwatch is a web-based website monitoring service for digital agencies, SEO consultants, freelancers and care-plan providers responsible for client websites. It runs daily external checks and alerts users when monitored results change, helping identify issues that may affect search indexing or crawler access. Checks cover noindex tags, X-Robots-Tag headers, robots.txt rules and canonical URLs, as well as redirects and HTTP status, sitemap availability, TLS and domain expiry, structured data, content available without JavaScript, AI crawler access and exposed secrets in JavaScript. Users can review site-level results, change history and fix guidance. Agency plans add client grouping, up to three alert recipients, Slack notifications and webhook alerts. A free instant checker and individual noindex, AI crawler, Cloudflare and other site-checking tools are also available.

Updog.ai is a free, public-facing service created by Datadog that offers real-time health and outage monitoring of major SaaS providers (30+ services such as OpenAI, GitHub, Zoom, Slack) and 13 AWS services. Instead of relying on vendors’ status pages, Updog.ai leverages aggregated, anonymized telemetry data from thousands of customer environments, applies an AI-powered Bayesian model to detect performance degradations, and immediately surfaces alerts when patterns indicate systemic issues, sometimes even before official vendor notifications. The dashboard provides up to 90 days of degradation history so users can identify recurring third-party reliability risks and take proactive architectural or operational measures. Built as an independent signal source, Updog.ai helps engineering and SRE teams determine whether an issue is internal or external, enabling faster response, improved transparency to stakeholders, and reduced incident impact across the stack.

Ninja secure a website from a crash. Your team will be notified within 30 seconds if something goes wrong. Notify Ninja save your websites and servers out of big downtime and technical issues. Website monitoring is constantly checking your website to assure everything is operating as it should. This is an automated process, which helps you monitor your site every single minute and collect the performance results of your website. When problems arise, NotifyNinja lets you know about the problem within 30 seconds which helps you to fix the problem faster. You should always keep an eye on your website because even modern websites and applications can’t guarantee that you won’t have any troubles. Even Facebook, Twitter, or Google can’t get with any website problems or outages. Monitoring tools control your website availability from multiple locations and measure your response time at regular intervals. You can also control processes to check important customer interactions.

MageSentinel is a hosted synthetic-monitoring service for ecommerce checkout reliability. It uses a real browser to check Magento 2/Adobe Commerce and WooCommerce storefronts, following product discovery, cart, address, shipping and payment steps, then verifies cart details and checkout behavior. Scheduled checks can also place an optional real test order, confirm it in the store's admin and cancel it. The service reports the failed step and likely cause, and attaches screenshots, browser traces, network and console logs with sensitive values redacted. Merchants, ecommerce teams, developers and agencies can monitor one or many stores and route alerts to email, Slack or webhooks. Optional Magento and WooCommerce connectors provide additional store diagnostics; the hosted checks do not require a connector to run.

Stay aware and in control of all Dev and Ops incidents. Notify the right people, reduce response time, and avoid alert fatigue. Opsgenie is a modern incident management platform that ensures critical incidents are never missed, and actions are taken by the right people in the shortest possible time. Opsgenie receives alerts from your monitoring systems and custom applications and categorizes each alert based on importance and timing. On-call schedules ensure the right people are notified through multiple communication channels including voice calls, email, SMS, and push messages on mobile devices. If an alert is not acknowledged, Opsgenie automatically escalates it, ensuring the incident gets the needed attention. Sign up for an instant free trial.

MonitorWWW is a website monitoring and security service for website owners, online stores, agencies and hosting teams. It checks websites every five minutes without requiring a plugin, server installation or hosting credentials. Checks cover availability, response time, SSL certificates, domain expiry, DNS and email-authentication records, security headers, exposed configuration or backup files, suspicious code, PHP errors, content changes and performance signals. WordPress monitoring adds core-version and known-vulnerability checks, malware detection and checks for WooCommerce cart and checkout availability; PrestaShop also has platform-specific security and configuration checks. Users review findings in a dashboard, receive email, SMS or Telegram alerts, and can generate PDF reports. Plans differ by monitored-site count and features, serving both individual sites and client portfolios.

FlareWarden monitors your entire stack from a single URL. Smart Setup auto-detects uptime, SSL, DNS, critical content, and 700+ third-party dependencies like Stripe, AWS, and Cloudflare — in under 2 minutes. When a check fails, cross-region verification confirms it from multiple continents before alerting you. No more 3am false alarms from network blips. Most tools tell you your site is down. FlareWarden tells you why — your server, your payment provider, or your CDN? The parent/child architecture links your site to its dependencies so one glance shows full stack health. Every plan includes status pages that update automatically from your monitoring data. No manual incident creation during outages. Built for agencies, freelancers, and small teams who need reliable monitoring without enterprise pricing. Free plan with 15 monitors and a status page — no credit card required.

Be notified in real-time by email or sms as soon as your site becomes unavailable or inaccessible. Be alerted in real time of anomalies regarding the availability of your website or web application. With our HTTPCS Monitoring tool, opt for continuous monitoring and be notified whenever your site is unavailable (network problem, server failure). More accurate than standard ping solutions, our technology guarantees you a 99.999% continuity of monitoring service and doesn't require a long term commitment or any software installation. How can you make sure your website or web application is available everywhere in the world and at all time? Thanks to its innovative system for analyzing response times, HTTPCS Monitoring gives you a precise and non-intrusive visibility of the availability of an application, a website or an API. Access all statistics regarding latency and load times in order to to audit and optimize the performance of your server.