Alternatives to CatchJS
Compare CatchJS alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to CatchJS in 2025. Compare features, ratings, user reviews, pricing, and more from CatchJS competitors and alternatives in order to make an informed decision for your business.
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1
AdRem NetCrunch
AdRem Software
NetCrunch is a powerful, scalable, all-in-one network monitoring system built for modern IT environments. It supports agentless monitoring of thousands of devices, covering SNMP, servers, virtualization (VMware, Hyper-V), cloud (AWS, Azure, GCP), traffic flows (NetFlow, sFlow), logs, and custom data via REST or scripts. With 670+ monitoring packs and dynamic views, it automates discovery, configuration, alerting, and automates self-healing actions for efficient remote remediation in response to alerts. Its node-based licensing eliminates sensor sprawl and complexity, providing a clear, cost-effective path to scale. Real-time dashboards, policy-driven setup, advanced alert tuning and 40+ alert actions including remote script execution, service restart, process kill or device reboot-make NetCrunch ideal for organizations replacing legacy tools like PRTG, SolarWinds, or WhatsUp Gold. Fast to deploy and future-proof. Can be installed on prem, self hosted in the cloud, or mixed. -
2
Bird Eats Bug
Bird Eats Bug
Catch, report, and fix bugs faster. Screen recording with console logs. Found a bug? Create a screen recording without launching another application. Bird replays automatically include console logs and other technical data (browser, OS, screen size, etc.) to help developers spend less time on bugs and unnecessary back-and-forth. šMore information about Birdš š¦ Who is Bird for? Mainly web development teams: PMs, Engineers, QA and Designers. You can also get much better bug reports if non-technical people in your company start using Bird as well. ā³Quick setup Takes quite literally 5 minutes. No coding or technical knowledge needed. ā ļø JavaScript error tracker Bird automatically notifies you about JavaScript errors on the pages of your choice.Starting Price: $15/user/month -
3
Sematext Cloud
Sematext Group
Sematext Cloud is an innovative, unified platform with all-in-one solution for infrastructure monitoring, application performance monitoring, log management, real user monitoring, and synthetic monitoring to provide unified, real-time observability of your entire technology stack. It's used by organizations of all sizes and across a wide range of industries, with the goal of driving collaboration between engineering and business teams, reducing the time of root-cause analysis, understanding user behaviour and tracking key business metrics. The main capabilities range from log monitoring to APM, server monitoring, database monitoring, network monitoring, uptime monitoring, website monitoring or container monitoring Find complete details on our website. Or better: start a free demo, no email address required.Starting Price: $0 -
4
Pandora FMS
Pandora FMS
With more than 50,000 customer installations across the five continents, Pandora FMS is a truly all-in-one monitoring solution, covering all traditional silos for specific monitoring: servers, networks, applications, logs, synthetic/transactional, remote control, inventory, etc. Pandora FMS gives you the agility to find and solve problems quickly, scaling them so they can be derived from any source, on-premise, multi cloud or both of them mixed. Now you have that capability across your entire IT stack and analytics to find any problem, even the ones that are hard to find. Thanks to more than 500 plugins available, you can control and manage any application and technology, from SAP, Oracle, Lotus, Citrix or Jboss to VMware, AWS, SQL Server, Redhat, Websphere, etc.Starting Price: ā¬90/month -
5
Datadog
Datadog
Datadog is the monitoring, security and analytics platform for developers, IT operations teams, security engineers and business users in the cloud age. Our SaaS platform integrates and automates infrastructure monitoring, application performance monitoring and log management to provide unified, real-time observability of our customers' entire technology stack. Datadog is used by organizations of all sizes and across a wide range of industries to enable digital transformation and cloud migration, drive collaboration among development, operations, security and business teams, accelerate time to market for applications, reduce time to problem resolution, secure applications and infrastructure, understand user behavior and track key business metrics.Starting Price: $15.00/host/month -
6
LogicMonitor
LogicMonitor
LogicMonitorās SaaS-based observability and IT operations data collaboration platform helps ITOps, developers, MSPs and business leaders gain visibility into and predictability across the technologies that modern organizations depend on to deliver extraordinary employee and customer experiences. LogicMonitor seamlessly monitors everything from networks to applications to the cloud, empowering companies to focus less on troubleshooting and more on innovation. Bridge the gap between tech, teams, and IT with powerful real-time dashboards, network device configurations, full data center visibility, network scanning, and flexible alerting and reporting. -
7
Dynatrace
Dynatrace
The Dynatrace software intelligence platform. Transform faster with unparalleled observability, automation, and intelligence in one platform. Leave the bag of tools behind, with one platform to automate your dynamic multicloud and align multiple teams. Spark collaboration between biz, dev, and ops with the broadest set of purpose-built use cases in one place. Harness and unify even the most complex dynamic multiclouds, with out-of-the box support for all major cloud platforms and technologies. Get a broader view of your environment. One that includes metrics, logs, and traces, as well as a full topological model with distributed tracing, code-level detail, entity relationships, and even user experience and behavioral data ā all in context. Weave Dynatraceās open API into your existing ecosystem to drive automation in everything from development and releases to cloud ops and business processes.Starting Price: $11 per month -
8
DeepWebMonitor
DeepWebMonitor
Monitor website pages for changes behind login, web forms and inside web apps. Forms, multi-step sequences, SPA and full JavaScript rendering are supported. We open websites with real browser, click on links, submit forms and perform other required actions to get to the page you need and monitor it for changes. When selected page content changes we notify you.Starting Price: Free -
9
PageWatch
PageWatch
Track updates of your entire site. Catch website issues before your users do. Find visual bugs on every page. Studies show up to 85% of visitors are more likely to leave after seeing errors on your site. See how new changes affect the rest of your site and catch any unexpected side effects before it becomes a problem. PageWatch analyzes your website using Lighthouse to identify slow pages that might hurt your conversions. PageWatch is a zero config tool for front-end testing. It allows you to test any site for performance issues, broken layouts, spelling mistakes, broken links and more. You can run PageWatch as part of your continuous integration process. On every pull request or deploy you'll be able to test your site and catch any issues before it becomes an issue. Our Netlify build plugin can run PageWatch audits automatically from pull request previews or production builds.Starting Price: $29 per month -
10
Corner Bowl Server Manager
Corner Bowl Software Corporation
SIEM, Log Management, Server Monitoring and Uptime Monitoring Software for Less! Industry leading free and responsive phone and remote session support when you need it the most. Get compliant by centrally storing Event Logs, syslogs and application logs from any system or device. Receive real-time notifications when users login, accounts are locked out and accounts are changed. Satisfy auditing requirements such as JSIG and NIST with our out-of-the-box SIEM and security reports. Monitor server resources such as CPU, memory, disk space, directory size and process specific resource consumption. Restart services, kill processes, remote launch custom scripts and fire SNMP Traps. Generate file and directory user access audit reports. Receive SNMP Traps, monitor SNMP Get values and much more. Get real-time notifications when network performance degrades below acceptable performance thresholds. Monitor web, email, database, FTP, DNS and Active Directive servers. Monitor Docker Containers.Starting Price: $20 one-time fee -
11
TypeScript
TypeScript
TypeScript adds additional syntax to JavaScript to support a tighter integration with your editor. Catch errors early in your editor. TypeScript code converts to JavaScript, which runs anywhere JavaScript runs: In a browser, on Node.js or Deno and in your apps. TypeScript understands JavaScript and uses type inference to give you great tooling without additional code. TypeScript was used by 78% of the 2020 State of JS respondents, with 93% saying they would use it again. The most common kinds of errors that programmers write can be described as type errors: a certain kind of value was used where a different kind of value was expected. This could be due to simple typos, a failure to understand the API surface of a library, incorrect assumptions about runtime behavior, or other errors.Starting Price: Free -
12
Atatus
NamLabs Technologies
NamLabs Technologies is an Indian software company that publishes a software suite called Atatus. Atatus is a SaaS software & a full stack observability platform. It provides a wide range of monitoring capabilities including Application Performance Monitoring, Real-User Monitoring/ End User Monitoring/ Browser Monitoring, Synthetic Monitoring, Infrastructure Monitoring, Logs Monitoring, and API Analytics. Analyze the performance of your application for performance issues such as slow transactions, database queries, website availability, uptime, latency, response time, and throughput, much more. 24x7 customer support is guaranteed.Starting Price: $49.00/month -
13
Errorception
Errorception
Your users aren't going to report errors. Errorception is a great way to find those errors. Find JavaScript errors you aren't even aware of. Simply copy/paste a JavaScript snippet to your site, and you're done! You will be recording errors in 5 minutes, tops! See your errors pointed out right in your own code. Investigate errors easily. Source maps are applied automatically. You don't need to bother with minified code. Errorception causes no load-time performance hit. Your site operates at top speed. Errorception groups errors together, so you don't sift through raw logs. Errorception groups your errors together, so you don't see a long daunting list of logs. You see sensible, actionable errors. You don't have to mark errors as duplicates here. Errorception is drop-in. Neither do you need to change your code, nor does Errorception modify your code or runtime. Just add a script tag, and you're done.Starting Price: $5 per month -
14
Loado
Loado
Loado tracks and analyzes the performance of your websites. We use Core Web Vitals and User Timings to do this, and we alert you on time if there are any problems. This allows you to keep your website running smoothly and efficiently. Analytics are collected from real users using Web Vitals, this is real data that you get instantly. By using granular analytics from Loado, developers could optimize application performance for specific pages, device types, or even geographic regions. The page performance becomes an important ranking signal for Google. A faster site means a higher ranking position which tends to lower marketing costs. Core Web Vitals are a set of website metrics that consider speed, responsiveness, and visual stability. Just add one script tag to the Head section and start collecting the data. -
15
TrackJS
TrackJS
TrackJS makes finding and fixing client-side errors simple. We automatically detect bugs on your website and give you a clear view of how the user got to the error. Don't wait for your users to report bugs. Know as soon as they happen with TrackJS. JavaScript errors are unpredictable. Finding bugs and triaging user reports is annoying, time-consuming, and expensive. TrackJS makes JavaScript error handling easy and accessible for your whole team. With our simple reports and clear alerts, you'll see and understand errors in your frontend code with the context to fix bugs fast. We don't bill our service by the number of errors or events you send. That wouldn't incentivize us to help you fix errors! We want to be your partner and to succeed when you succeed. We're not being squeezed by private equity or beholden to venture capital. TrackJS is 100% employee owned and operated. We're here to do right by our customers.Starting Price: $49 per month -
16
Request Metrics
Request Metrics
Request Metrics makes web performance easy with real-user monitoring and automated Lighthouse testingāhelping you boost Core Web Vitals, SEO, and user experience. Track real visitors, not just lab tests, with automatic noise cancellation, actionable insights, and detailed element attribution. Our scheduled Lighthouse tests detect regressions before they hurt rankings, while real-user data keeps you informed on how your site performs in the wild. Filter by page, device, region, or vendor to uncover performance bottlenecks, and get instant alerts when something slows down. With built-in vendor tracking, youāll know exactly which third-party scripts are hurting your load times. No complicated setup, no code changesājust fast, reliable performance monitoring designed for modern websites. Get started for free today!Starting Price: $34 per month -
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Treo
Treo
Traditional web performance metrics are often technical and don't reflect your customer's journey. Treo is powered by Lighthouse and focuses on user experience metrics to help you to build delightful web experience. Treo shows your site performance like no one else. Use carefully crafted visualizations and understand your data easily. Treo audits your pages in a stable, isolated environment, providing the results you can trust. Get a configurable, world-class infrastructure, that saves your time and covers all your use-cases. Configure CPU power and network throughput using a device that represents your customers. Receive a notification when metrics change or get lower than expected. Choose a location that is closer to your customers. Avoid network latency and geo barriers. Get all the collected data using a simple REST API. Easily integrate Treo to your existing infrastructure. Monitor internal URLs by whitelisting our IP address. Catch bugs before they reach production.Starting Price: $79 per month -
18
Checkmk
Checkmk
Checkmk is a comprehensive IT monitoring system that enables system administrators, IT managers, and DevOps teams to identify issues across their entire IT infrastructure (servers, applications, networks, storage, databases, containers) and act quickly to resolve them More than 2,000 commercial customers and many more open source users worldwide use Checkmk daily. Key product features: ā¢ Service state monitoring with almost 2,000 checks 'out of the box' ā¢ Log and event-based monitoring ā¢ Metrics, dynamic graphing, and long-term storage ā¢ Comprehensive reporting incl. availability and SLAs ā¢ Flexible notifications and automated alert handling ā¢ Monitoring of business processes and complex systems ā¢ Hardware and software inventory ā¢ Graphical, rule-based configuration, and automated service discovery Top use cases: ā¢ Server Monitoring ā¢ Network Monitoring ā¢ Application Monitoring ā¢ Database Monitoring ā¢ Storage Monitoring ā¢ Cloud Monitoring ā¢ Container MonitoringStarting Price: $0/year -
19
Checkly
Pink Robots
Monitor the status and performance of your API endpoints & vital site transactions from a single, simple dashboard. Checkly is an active reliability platform that brings together the best of end-to-end testing and active monitoring to serve modern, cross-functional DevOps teams. With a focus on JavaScript-based Open Source tech stacks, Checkly is easy to get started with and seamlessly integrates into your development workflow. Checkly is the API & E2E monitoring platform for the modern stack: programmable, flexible and loving JavaScript. Monitor and validate your crucial site transactions. Take screenshots and get instant insights into what's working and what's not. Coding browser click-flows used to be hard. Not anymore. Use modern open source frameworks like Playwright and Puppeteer to automate your flows. Run your checks in 20 locations worldwide. Make sure your APIs always responds quickly and with the correct payload.Starting Price: $0.80 /10k API check runs -
20
Better Stack
Better Stack
Better Stack is a unified observability tool that helps you ship better software, faster. Schedule on-call rotations, receive actionable alerts, and resolve incidents with ease. Better Stack brings together incident management, uptime monitoring, status pages, log management, and infrastructure monitoring ā all in one place. Built for speed and scale, it combines multiple monitoring and alerting workflows into a single, powerful interface that boosts visibility and slashes response times. Key features include an OpenTelemetry-native Kubernetes collector powered by eBPF, real-time alerting, and collaborative dashboards. Under the hood, Better Stack runs on ClickHouse, enabling lightning-fast queries and scalable ingestion across high-cardinality datasets. You can visualize your entire stack, turn all your logs into structured data, and query everything with SQL ā as if it were a single database. Seamlessly integrates into your workflow with 100+ integrations.Starting Price: $29 per month -
21
MachMetrics
MachMetrics
MachMetrics continually monitors the speed of your website So you know exactly how your pages are performing: - throughout the day - around the world - on various devices Daily scheduled tests ensure you're always monitoring performance. Analyze from desktop + mobile. International locations. Custom scripting for advanced scenarios. Speed consultants worldwide trust us with their webperf needs. Setup in seconds. No code to install. 30 day free trial.Starting Price: $9 per month -
22
WebGazer
WebGazer
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.Starting Price: $5.00/month -
23
Loadsy
Loadsy
Run Performance Tests for Digital Products/Services in Minutes Avoid Steep Learning Curveā¦ Design, Run, Save and Automate your Tests with JavaScript Code. ā¢ Design threads as complex as you need, simulate diverse and real scenarios simultaneously for your tests with JavaScript code. ā¢ Create and run any kind of performance tests with just one tool. ā¢ Tests for any platform no matter where itās hosted, in the cloud, or an on-premise server. ā¢ Test continuously with CI/CD integrated tools, automate performance tests. ā¢ Get data in real-time, catch and solve blind spots before a user does. ā¢ Get a realistic simulation with virtual browsers and simulate hundreds of thousands of users.Starting Price: $0.05/hour/user -
24
Browsera
Browsera
Browsera tests and reports cross-browser layout differences and scripting errors on your site. Browsera locates cross-browser layout problems automatically by comparing each browser's output. JavaScript errors from each browser are collected and reported after your test is complete. With the site crawling feature, it's easy to test all of the different pages on your site. Most of your sites require authentication. No sweat, Browsera can handle logging in prior to running each test. Tired of building and maintaining a physical or virtual test lab? Our service runs entirely in the cloud, so there's nothing to install. Have a bunch of AJAX and DHTML on your site? Not to worry, we wait for the page to be ready before testing it. Browsera will notify you of possible cross-browser layout problems it finds while testing your site. Instead of having to check out each screenshot on your own, you'll get a report detailing which pages have potential problems. -
25
Centreon
Centreon
Centreon is a global provider of business-aware IT monitoring for always-on operations and performance excellence. The companyās holistic, AIOps-ready platform is designed for todayās complex, distributed hybrid cloud infrastructures. Centreon monitors the complete IT Infrastructure from Cloud-to-Edge for a clear and comprehensive view. Centreon removes blind spots, monitoring all equipment, middleware and applications that are part of modern IT workflows, from on-premise legacy assets to private and public cloud environments, all the way to the edge of the network, where smart devices and customers combine to create business value. Centreon is constantly current, able to support the most dynamic environments. With auto-discovery capabilities it can keep track of Software-Defined Network (SDN) elements, AWS or Azure cloud assets, Wi-Fi access points or any other component of todayās agile IT infrastructure. -
26
URIports
URIports BV
Utilize the free built-in capabilities of mail servers and your site visitors' browsers to quickly identify and resolve security, content and connectivity issues with your domain, without having to install additional scripts or software. URIports is an advanced unified tool to monitor web and mail server security and configuration. URIports is the result of our decades of experience in online coding, monitoring, and security. When the system is configured, we receive reports from your site visitorsā browsers and mail servers. We process all these reports and provide you with insights into what's happening. Get clear, real-time insights into the performance of your website. Monitor violations, network errors, certificate issues, deprecated code, and more! Monitor your SPF and DKIM alignment and prevent unauthorized use of your email domain to protect people from spam, fraud, and phishing.Starting Price: $1 per month -
27
AppBeat
AppBeat
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. -
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Protect against Magecart, formjacking, skimming, PII harvesting, and other critical security vulnerabilities. Fill the gap in your security defenses. Gain visibility and control of third-party JavaScript libraries running in your web applications to keep customersā personal and financial data out of the hands of criminals. Mitigate risk by monitoring JavaScript libraries in real time to identify vulnerabilities and anomalous behavior that could compromise customer data. Avoid customer fraud and compliance fines. Protect against data theft that would undermine customer confidence and damage your brand. Stop software supply chain attacks. Detect and track all third-party scripts running on your site to identify suspicious scripts or changes in the behavior of trusted scripts. Prevent credential stuffing on the client side to block account takeover attempts. Proactively monitor web apps in the browser to catch criminals in the act.
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29
Sentry
Sentry
From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend. With Sentryās performance monitoring you can trace performance issues to poor-performing api calls and slow database queries. Source code, error filters, stack locals ā Sentry enhances application performance monitoring with stack traces. Quickly identify performance issues before they become downtime. View the entire end-to-end distributed trace to see the exact, poor-performing API call and surface any related errors. Breadcrumbs make application development a little easier by showing you the trails of events that lead to the error(s).Starting Price: $26 per month -
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Site Qwality
Site Qwality
Site Qwality is a website monitoring service that helps businesses track their online infrastructure. Site Qwality provides comprehensive monitoring tools including uptime tracking, multi-location performance checks, error code diagnostics, and real-time alerts through various channels like email, SMS, Slack, and webhooks. Site Qwality covers critical aspects such as website availability, cron job execution, page speed, SSL/TLS status, and API performance. By offering instant notifications and detailed error reports, Site Qwality enables businesses to quickly identify and address technical issues, minimize downtime, and maintain consistent online operations. Site Qwality is designed for developers, system administrators, DevOps teams, and business owners who need reliable, detailed insights into their digital infrastructure's health and performance.Starting Price: $6.99/month -
31
Apdex
Apdex
Improve your users' satisfaction. Gain insights into your website's availability and performance to increase conversion rate and income. Uptime, Performance and SSL monitoring, all combined in one UI. Downtime happens, be the first to know. Track availability of your website, server or API to get instant notifications of downtime. Focus on what matters to your users. Constantly measure the user experience metrics of your Website with Lighthouse tool to improve customers' satisfaction. Do not miss downtime or degradation of response time by receiving notifications to your favorite channels. Increase users' confidence by sharing your uptime statistics. Track what's important, create public status pages with your Website or API availability information. Monitor core web vitals as well as other core lighthouse metrics. Get hints to provide best experience to your customers. Do not miss chance to improve.Starting Price: $5 per month -
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Webdone
Webdone
Webdone is an AI-powered platform that enables users to create eye-catching landing pages and websites without coding or design skills. By simply describing your product, the AI builds a stunning page, eliminating coding headaches and stress. The platform offers effortless control, allowing easy customization of colors, backgrounds, and more with a simple and intuitive tool. Features include instant layout changes, one-click customization, and AI-powered theme generation for a fresh, professional look. Webdone utilizes technologies like React, Tailwind CSS, TypeScript, and JavaScript to ensure modern development practices. Performance optimization is achieved through AI-driven enhancements, including SEO optimization, accessibility improvements, and increased user engagement. The platform also provides a complete Next.js setup, enabling users to build, scale, and launch full-stack applications efficiently.Starting Price: $12 per month -
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Monitor.us
Monitor.us
Monitor.Us is a free, cloud-based IT systems monitoring service that provides comprehensive visibility into your website, server, network, and application performance. Its all-in-one dashboard allows you to monitor website uptime and response times, server health, network performance, and custom metrics from anywhere, facilitating quick identification and resolution of issues affecting your online presence. The platform offers features such as full-page load monitoring, which assesses how long it takes to load a complete HTML page in real browsers, and mobile monitoring, enabling you to stay informed on the go with alerts sent to your Android and iOS devices, as well as via text and email. Monitor.Us supports various protocols, including HTTP, HTTPS, PING, DNS, SMTP, POP3, IMAP, TCP, UDP, and ICMP, ensuring comprehensive monitoring capabilities. It provides instant failure alerts through email, instant messaging, SMS, or live voice, and offers detailed reporting.Starting Price: Free -
34
changed.online
changed.online
This may seem like a no-brainer, but itās important to make sure your website is always up and running. There are many website monitoring services that can help you with this, but itās also important to do your own due diligence. Regularly check your website yourself to ensure itās accessible and functioning properly. Our solution can monitor websites for keywords, which are error messages or the other way round ā what you expect to publish on those pages. Itās not enough to just make sure your website is up and running ā you also need to monitor it for performance issues. Use a website monitoring service to track things like page load times, uptime, and error rates. This will help you identify any potential problems so you can fix them quickly, before customers notice and switch to your competition.Starting Price: $49 per month -
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Odown
Odown
Odown is a website uptime monitoring tool that helps you maintain customer trust by tracking your websiteās 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 websiteās 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. -
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Onemon.io
Onemon.io
Onemon.io is an online tool for automatically monitoring websites and their all key aspects: domain, certificate, security and script errors. 1 minute tests interval from different locations. Email, push, chat (Teams, Slack, Discord) and SMS notifications. Tests are also regularly run in a real browser which means that not only a web server is tested, but the site with its all components: images, styles, fonts, scripts etc. No installation required - only a website's URL is needed to run start the monitoring.Starting Price: $7 per month -
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WebSitePulse
WebSitePulse
WebSitePulse provides independent, remote monitoring of your web assets. Some of the most used services are uptime monitoring, website monitoring, server monitoring, web transaction monitoring.Starting Price: Free -
38
Hyperping
Hyperping
Combining reliable uptime and performance monitoring, hosted status pages & incident management all in one tool. Receive instant alerts when downtime occurs and collect performance metrics. Communicate incidents and maintenances to your users in beautifully simple status pages. Collaborate with developers and customer support to resolve issues together. Create incidents, add real-time updates and change your services status to keep your users in the loop. Instantly alert your team and communicate incidents with the integrations you love. Publish updates about incidents or maintenances and send notifications to your users. Set a password to share an internal status page with your teammates and collaborators. Arrange your monitors, status pages and teammates into specific projects. Change the method, parameters or headers of your HTTP monitors. Setup internal status pages and protect them with a password.Starting Price: $79 per month -
39
OnlineOrNot
OnlineOrNot
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.Starting Price: $20 per month -
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Client-Side Protection helps protect against end-user data exfiltration and shield websites from JavaScript threats. It analyzes script behavior in real-time, provides actionable insights in a single dashboard view, and delivers alerts to mitigate harmful script activity. Designed for PCI DSS v4.0, the solution helps businesses meet new script security requirements and safeguards against client-side attacks. Inject simple scripts into each monitored page without meaningfully impacting performance. Monitor and assess script activity from the browser while machine learning techniques analyze the risk of unauthorized action. Get real-time alerts, with detailed information about mitigation, if an active threat or attack is found. Immediately restrict malicious scripts from accessing and exfiltrating sensitive data on protected pages with one click. Defend your site from client-side threats. Ease compliance with PCI DSS v4.0. Strengthen your web page integrity.
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41
SEOJuice
SEOJuice
SEOJuice is a self-serve SaaS that drops a lightweight JavaScript snippet (or WordPress plugin) onto any CMS. Once installed it: ā¢ Scans every page daily to surface contextual internal-link opportunities with relevance scoring. ā¢ Automates on-page elements - meta titles/descriptions, image alt text, Open Graph tags and structured schema ā improving Core Web Vitals and long-term SEO. ā¢ Adds accessibility & ADA/WCAG fixes for better UX and compliance. ā¢ Generates programmatic pages & content suggestions to close keyword gaps at scale. ā¢ Provides competitor monitoring, technical audits & benchmarks inside a single dashboard, with white-label reporting for agencies. All optimizations are rendered at request time - your source content stays untouched - so you can switch plans or leave without breaking anything. The changes stay with you forever, even after cancellation. -
42
Cloudflare Page Shield
Cloudflare
Backed by our world-class threat intelligence and machine learning capabilities, Page Shield helps defend against client-side attacks that target vulnerable JavaScript dependencies. Detect and mitigate browser supply chain attacks with machine learning-based protection. Get instant notifications when new scripts are detected, marked as malicious, or loaded from unknown domains. Reduce third-party vendor risk and address client-side requirements like GDPR, PCI, and more. Page Shield simplifies third-party script management by tracking loading resources (like scripts) for potentially malicious additions, connections, or changes. Powered by our threat intelligence and machine learning-based detection, it instantly identifies, reports, and blocks threats, before they reach your website. Block browser-based attacks aimed at your usersā personal and financial information. Monitor JavaScript dependencies and block threats with threat intelligence and machine learning. -
43
DebugBear
DebugBear
DebugBear is a web performance monitoring tools that helps companies keep their website fast and pass Google's Core Web Vitals assessment. Find out how to optimize your website and get alerted when there's a problem. Run scheduled synthetic tests, monitor data from Google's Chrome User Experience Report (CrUX), and collect real user analytics directly on your website. Track Google Lighthouse scores over time and benchmark against your competition. Get custom performance recommendations with detailed analysis, and quickly try out performance optimizations with page speed experiments ā without deploying any code!Starting Price: $125/mo -
44
LoadFocus
LoadFocus
All-In-One cloud testing platform for load testing and performance testing, website speed testing, website UI testing, mobile applications and API endpoints. Easy upload and run JMeter tests from multiple cloud locations with thousands of users. Inspect real-time performance metrics for your Website and APIs with Apache JMeter from the cloud. Monitor changes over time and get advice on how to reduce page load times. We run your tests from cloud instances at scheduled times and notify you if something goes wrong. Load your websites and web pages in mobile emulators and inspect screenshots to find potential rendering issues, invalid HTML, missing images, wrong CSS. Schedule runs and inspect rendered images on all devices in just seconds. Emulate your site across different screen sizes and resolutions. Generate screenshots of two websites in just seconds and compare the generated screenshots by a threshold to check differences.Starting Price: $24 per month -
45
Koality
Koality
Secure your online store and website against problems. Collapsing sales, technical errors, bad SEO, and much more. Continuously review key business metrics. sales, new registrations, open shopping carts, and more. No matter if inaccessible websites, browser errors, too large images, or bad performance, with us you have everything in view. Koality was designed to monitor all important properties across the board. Instead of many individual services, we offer everything from a single source. Our monitoring service is designed to check entire online stores and websites within minutes. This does not require any programming/modification of the site or technical expertise. Additionally, experts and those who want to become experts will find all the necessary detailed information needed to create a better website.Starting Price: ā¬10 per month -
46
SmarterStats
SmarterTools Inc.
SmarterStats offers true web log analytics to provide a complete understanding of the popularity and performance of your online presence. Google Analytics and script-based website analysis products only track those pages that have a script added to them, and then only track those visitors that allow JavaScript. A web server logs every visit to every web page of a site, making log analytics many times more reliable than script-based products. SmarterStats has several reports that analyze website traffic and help business owners improve a siteās overall performance. Along with pre-built reports, webmasters, marketers and business owners can build their own custom reports so the information they need is the information they get. Site Tuning helps improve a website's overall performance and search engine compatibility. By looking for common, and sometimes hidden, issues that could cause visitors to leave your site, and search engines to avoid it,Starting Price: $299 one-time payment -
47
Kendo UI
Progress Software
Kendo UI is the ultimate collection of JavaScript UI components with libraries for jQuery, Angular, React, and Vue. Quickly build eye-catching, high-performance, responsive web applicationsāregardless of your JavaScript framework choice. Easily add advanced JavaScript components into your existing or new designs. Kendo UIās hundreds of components handle everything you need to satisfy your usersā requirements. Add advanced components such as data grids, charts, schedulers, and calendars with just a few lines of code. Each is crafted for performance and customizability. Switching frameworks and starting new projects wonāt require a new license or a big learning curve. Everything is included and up-to-date, APIs are consistent and theming is easy. Our QA process coupled with world-class support teams and a large user community means that our components will always work the way theyāre supposed toāguaranteed.Starting Price: $899 -
48
Logz.io
Logz.io
We know engineers love open source. So we supercharged the best open source monitoring tools ā including ELK, Prometheus, and Jaeger, and unified them on a scalable SaaS platform. Collect and analyze your logs, metrics, and traces on one unified platform for end-to-end monitoring. Visualize your data on easy-to-use and customizable monitoring dashboards. Logz.ioās human-coached AI/ML automatically uncovers errors and exceptions in your logs. Quickly respond to new events with alerting to Slack, PagerDuty, Gmail, and other endpoints. Centralize your metrics at any scale on Prometheus-as-a-service. Unified with logs and traces. Add just three lines of code to your Prometheus config files to begin forwarding your metrics to Logz.io for storage and analysis. Quickly respond to new events by alerting Slack, PagerDuty, Gmail, and other endpoints. Logz.ioās human-coached AI/ML automatically uncovers errors and exceptions in your logs.Starting Price: $89 per month -
49
WebScraping.ai
WebScraping.ai
WebScraping.AI is an AI-powered web scraping API that simplifies data extraction by handling browsers, proxies, CAPTCHAs, and HTML parsing on behalf of the user. By providing a URL, users can receive the HTML, text, or data from the target webpage. The platform features JavaScript rendering in a real browser, ensuring that page content appears exactly as it would on a user's computer. It also offers automatically rotated proxies, allowing users to scrape any site without limitations, with geotargeting options available. HTML parsing is performed on WebScraping.AI's servers, alleviating concerns about heavy CPU load and potential vulnerabilities in HTML parsers. Additionally, the platform includes tools powered by large language models to extract unstructured page content, provide answers to questions, generate summaries, and perform rewrites. Users can extract visible page text after JavaScript rendering and use it as a prompt for their own LLM models.Starting Price: $29 per month -
50
axe Monitor
Deque Systems
Perform enterprise-level accessibility audits and meet your compliance needs with advanced reporting, monitoring, and management of accessibility issues against industry standards or customized guidelines. Axe Monitor helps ensure your large website becomes accessible and remains accessible. Dynamically scan, monitor and report on the accessibility status of your site across business and development teams. Modern web applications driven by large content management systems require automated tools capable of handling unexpected page hierarchies and linking structures. Axe Monitor is designed to follow links dynamically, and allows for scripting of basic user flows to trigger event-driven content and bypass user authentication. Large websites are constantly changing and adding new content. Axe Monitor links content creators, designers, developers and project managers to ensure accessibility throughout the workflow.
