NetDiag.Dev

Pingdom is an uptime monitoring service. When problems happen with a site that Pingdom monitors, it immediately alerts the owner so the problem can be taken care of.

It is all about helping you to keep your websites up. It monitors your websites every 5 minutes and alerts you if your sites are down.

Better Stack is a radically better infrastructure monitoring platform that calls the right person on your team if anything goes wrong. Schedule on-call duties, receive helpful alerts, and collaborate on solving incidents faster than ever.

Beats is the platform for single-purpose data shippers. They send data from hundreds or thousands of machines and systems to Logstash or Elasticsearch.

Monitoring a website is one thing – finding the best way to alert you to downtime another. At StatusCake we give you as many options as possible to decide when & how often you’re contacted. Whether it’s by email, SMS, push notifications for iOS & Android or integration with third party apps including Zapier and PagerDuty – you decide how you want to be alerted and when!

It is the world’s foremost and widely-used network protocol analyzer. It lets you see what’s happening on your network at a microscopic level and is the de facto standard across many commercial and non-profit enterprises, government agencies, and educational institutions.

It can monitor and classify system conditions like bandwidth usage or uptime and collect statistics from miscellaneous hosts as switches, routers, servers and other devices and applications.

updown is an online service that checks your website's status by periodically sending an HTTP HEAD request to the URL of your choice. It then notifies you by email or sms when your website is not responding correctly.

It is an auto-discovering PHP/MySQL/SNMP based network monitoring which includes support for a wide range of network hardware and operating systems including Cisco, Linux, FreeBSD, Juniper, Brocade, Foundry, HP and many more.

Site24x7 is an all-in-one monitoring solution that allows you to monitor every part of your IT infrastructure from Websites to Applications, to Servers (both on-premise and on the cloud) as well as your Network infrastructure.

It connect all your devices using WireGuard, without the hassle. Create a secure network between your servers, computers, and cloud instances. Even when separated by firewalls or subnets, Tailscale just works. It makes it as easy as installing an app and signing in.

It is a self-hosted, open-source, fancy uptime monitoring, and alerting system. It can monitor HTTP, HTTP with keywords, TCP, Ping, and even DNS systems!

Riemann aggregates events from your servers and applications with a powerful stream processing language. Send an email for every exception in your app. Track the latency distribution of your web app. See the top processes on any host, by memory and CPU.

It gives you insight on how well your site loads and provides actionable recommendations on how to optimize it. It is a free tool that analyzes your page's speed & performance.

It is an open-source, free and lightweight network intrusion detection system (NIDS) software for Linux and Windows to detect emerging threats.

It is the most powerful and trusted network monitoring software on the market. It extends on proven, enterprise-class Open Source components to deliver the best network, server and application monitoring solution for today's demanding organizational requirements.

It is an all in one uptime monitoring tool which monitors your URL from 10 locations around the globe ensuring that if your website ever goes down again, you get alerted within 60 seconds. It comes with advanced capabilities like SSL Monitoring, Advanced Alerting and more.

It is a DNS sinkhole that protects your devices from unwanted content, without installing any client-side software. You can run it in a container, or deploy it directly to a supported operating system via our automated installer.

Checkly is the API & E2E monitoring platform for the modern stack: programmable, flexible and loving JavaScript. Free for developers!

A critical component of any zero-trust strategy is securing the environment that everyone and everything is connecting to: the workplace. It enables a dynamic and automated approach to policy enforcement that empowers software-defined access and automated network segmentation within IT and OT environments.

DPDK is the Data Plane Development Kit that consists of libraries to accelerate packet processing workloads running on a wide variety of CPU architectures.

It is a low-maintenance auto-discovering network monitoring platform supporting a wide range of device types, platforms and operating systems

It is an easy way to track the uptime & SSL health for your websites & apps. It's website monitoring without the hassle. Multi-location uptime monitoring, mixed content detection and SSL certificate & transparency reporting. There's an API and kick-ass documentation too.

Packetbeat agents sniff the traffic between your application processes, parse on the fly protocols like HTTP, MySQL, Postgresql or REDIS and correlate the messages into transactions.

It is the network management and command center for Cisco DNA, your intent-based network for the enterprise. Provision and configure all your network devices in minutes. Use advanced artificial intelligence (AI) and machine learning (ML) to proactively monitor, troubleshoot, and optimize your network. Integrate with third-party systems for improved operational processes.​

It provides website and server availability monitoring. At its most basic, the service lets users enter a list of addresses of web site addresses or other Internet based services, and then checks to see if that site or service is responding properly

AlertBot's Website Monitoring provides businesses with around the clock testing of their website pages. This monitoring includes the testing of all possible webpage failure points as well as the verification of key performance metrics. This data gives businesses the information they need to ensure their websites are always running error-free and providing a quality user experience.

WebGazer is a monitoring service that checks your website, cron jobs or scheduled tasks on a regular basis. It notifies you with instant alerts in case of a problem.

It monitors your website, dashboards, API's, and more and alerts your team when downtime happens. We also give you a Status Page which keeps your customers looped in and improves transparency.

web-alert.io is a simple uptime and API monitoring service built for developers, indie hackers, and small SaaS teams who want clear, reliable alerts without enterprise complexity. It monitors websites and API endpoints, sends instant downtime alerts, checks SSL certificates, and tracks response times — all inside a clean, minimal dashboard. Setup takes under a minute, and there’s a free plan included. Perfect for small projects, micro-SaaS, client sites, and devs who just want to know when something is down.

Modern uptime and performance monitoring for websites and APIs, with rich reporting, flexible alerting, and competitive pricing. More than just HEAD requests: choose an HTTP method, headers, and body for any request.

It provides improvement points to locate the source of problems in hidden areas that were not found in other products.

Uptime.com provides peace of mind to thousands of customers like Apple, Microsoft, IBM, Palo Alto Networks, Kraft, and BNP Paribas who trust us to monitor the performance, health, and downtime of their websites.

Website performance monitoring, simplified for small teams. It's not a expensive APM "solution" or a complex query language to learn. It is the key metrics you need to know to keep your website running fast and your customers happy.

Pingbreak is an original and free monitoring service. Get notified if your website is down. Pingbreak checks all of your websites each minute and alert you instantly by Direct Message on Twitter, WebHook, Discord channel, Slack or Mattermost.

Picreel converts website visitors to customers with custom popups, advanced targeting, segmentation, and A/B testing for maximum campaign optimization.

It is an advanced network monitoring software that scales and expands with the needs of your network.

When it comes to downtime, seconds count. We monitor your site around-the-clock to make sure it never skips a beat. We offer HTTP, HTTPS, RUM, DNS, ICMP, IMAP, POP3, SMTP, TCP, UDP, and Transaction monitors.

Receive alerts when your website or API is down through emails, Slack or SMS, integrated with real time data and insights

It is an easy-to-use and affordable network monitoring solution. It monitors network devices such as routers, switches, firewalls, load balancers, wireless LAN controllers, servers, VMs, printers, storage devices, and everything that has an IP and is connected to the network. ManageEngine OpManager continuously monitors the network and provides an in-depth visibility and control over it. In case of a fault, you can easily drill down to the root cause and eliminate it before operations are affected.

It is a command line application to monitor every part of your web app using a simple JSON configuration file. Get alert not only when your site is down but also when it's slow.

It is a platform that provides continuous security monitoring and mitigation. It allows IT organizations to efficiently address numerous access, endpoint compliance and threat management challenges even within today's complex, dynamic and expansive enterprise networks.

A simple command line tool to interact with hundreds of servers around the world. Run benchmarks and debug your infrastructure without leaving your console.

It is an Infrastructure monitoring as a service for public/private cloud, on-prem and hybrid environments. Built for SaaS, e-commerce, service providers and enterprise.

Using our stories feature, you can test many different features of your live, production website. It could be you need to find out if logins are working. Whatever it is, StillAlive can (or will) be able to test it.

It is a web monitoring tool that keeps you up to date and up to speed. If you're looking to keep track of updates on any website or social platform, it is the tool you need.

Whether you have one site, or twenty, Vigil is a simple and reliable service for monitoring the uptime and performance of your websites. View all your sites on our beautiful client dashboards, get email and push notifications when there is a problem, and receive weekly email summary reports that let you know how your sites are doing over the long-term.

AI-powered web page monitoring with support for HTML and JS-rendered pages. Get instant alerts and readable summaries of what changed.

It is a powerful tool for ensuring the availability of your websites and servers. You can easily keep track of your online assets and receive alerts when there are any issues or disruptions.

Monitor website changes and send the latest data to IFTTT, Google Sheets, Zapier, Firebase, AWS Lambda and many other services.