lukmeyer

LukStack Uptime Monitor is a lightweight yet powerful website monitoring solution built for agencies, freelancers, and web professionals who manage multiple websites.
Track uptime, response times, and SSL certificate expiration for all your client sites from a single WordPress dashboard. When something goes wrong, you will know immediately through email notifications or webhook integrations with Slack, Discord, and other services.
<h4>Free Plan Features</h4>
<ul>
<li>Uptime Monitoring – Automatic checks every 15 minutes</li>
<li>Monitor up to 2 websites</li>
<li>Webhook Support – Native integration with Slack, Discord, Microsoft Teams, and generic webhooks</li>
<li>Manual Checks – Test any site instantly with one click</li>
<li>Dashboard Widget – Quick status overview right on your WordPress dashboard</li>
</ul>
<h4>Pro Plan Features</h4>
<ul>
<li>Everything in Free</li>
<li>Monitor up to 100 websites</li>
<li>5 minute check interval for faster downtime detection</li>
<li>SSL Certificate Monitoring – Get warned before certificates expire</li>
<li>Website Performance Tracking – Monitor response times with millisecond precision</li>
</ul>
<h4>Who Is This For?</h4>
<ul>
<li>Web Agencies managing client websites</li>
<li>Freelancers maintaining multiple projects</li>
<li>Site Owners who want peace of mind</li>
<li>DevOps Teams needing a simple monitoring solution</li>
</ul>
<h4>How It Works</h4>
<ol>
<li>Add a website URL to monitor</li>
<li>LukStack Uptime Monitor checks the site automatically</li>
<li>If the site goes down or returns an error, you get notified</li>
<li>When the site recovers, you get a recovery notification</li>
</ol>
<h4>Webhook Integrations</h4>
LukStack Uptime Monitor automatically formats notifications for popular services:
<ul>
<li>Slack – Rich message attachments with color-coded severity</li>
<li>Discord – Embedded messages with status information</li>
<li>Microsoft Teams – Via generic webhook connector</li>
<li>Zapier / Make – JSON payload for custom automations</li>
</ul>
<h4>Privacy</h4>
LukStack Uptime Monitor only stores the URLs you choose to monitor and their status data. No personal information is collected or transmitted to external servers except for the webhook notifications you configure.
This plugin uses Freemius for license management and opt-in usage tracking. Freemius collects anonymized data only when users explicitly opt in. See the Freemius Privacy Policy: https://freemius.com/privacy/
<h3>External services</h3>
This plugin connects to external services as part of its core monitoring functionality. Below is a description of each service, what data is sent, and when.
<h4>Monitored Websites</h4>
LukStack Uptime Monitor sends HTTP requests to the website URLs you add for monitoring. This is the core functionality of the plugin and is required to check uptime and response times. An SSL connection on port 443 is also made to check the SSL certificate expiration date for HTTPS sites (Pro). These requests are sent automatically via WordPress Cron and when you manually click “Check now”. The data sent is a standard HTTP GET request with a custom user agent header. No personal data is transmitted.
<h4>Freemius</h4>
This plugin uses Freemius SDK for license management, usage tracking (opt-in only), and the upgrade flow. When a user opts in, anonymized data such as the site URL, WordPress version, PHP version, and plugin version may be sent to Freemius servers. Users can opt out at any time.
This service is provided by Freemius, Inc. 
Terms of Service: https://freemius.com/terms/ 
Privacy Policy: https://freemius.com/privacy/
<h4>Slack (optional)</h4>
If you configure a Slack webhook URL in the plugin settings, LukStack Uptime Monitor sends POST requests to the Slack Incoming Webhooks API when a monitored site changes status (goes down, recovers, or has SSL issues). The data sent includes the website URL, its status, response time, and a timestamp. No personal data is transmitted.
This service is provided by Slack Technologies, LLC / Salesforce, Inc. 
Terms of Service: https://slack.com/terms-of-service 
Privacy Policy: https://slack.com/privacy-policy
<h4>Discord (optional)</h4>
If you configure a Discord webhook URL in the plugin settings, LukStack Uptime Monitor sends POST requests to the Discord Webhooks API when a monitored site changes status. The data sent includes the website URL, its status, response time, and a timestamp. No personal data is transmitted.
This service is provided by Discord, Inc. 
Terms of Service: https://discord.com/terms 
Privacy Policy: https://discord.com/privacy
<h4>Generic Webhooks (optional)</h4>
You may configure any third-party webhook URL (e.g. Microsoft Teams, Zapier, Make, or a custom endpoint). When a monitored site changes status, a POST request with a JSON payload is sent to that URL. The data sent includes the website URL, its status, response time, and a timestamp. No personal data is transmitted. Please refer to the terms of service and privacy policy of the respective service you configure.
<h3>Additional Information</h3>
<h4>Requirements</h4>
<ul>
<li>WordPress 5.8 or higher</li>
<li>PHP 7.4 or higher</li>
<li>PHP extensions: curl, openssl, json</li>
</ul>
<h4>Support</h4>
For support questions, please use the WordPress.org support forum for this plugin.
<h4>Credits</h4>
Developed by Luk Meyer.

LukStack Uptime Monitor

Monitor multiple websites for uptime, performance, and SSL certificate expiration. Get instant alerts via email, Slack, or Discord when issues occur.

Frank Corso

SiteAlert

SiteAlert checks your WordPress installation to ensure that it is healthy, up to date, and secure. Use the SiteAlert page to quickly see the results of the checks using the simple color-coded sections.
Once installed, there will be a new SiteAlert page added to the Tools menu and heart icon to your admin bar if the results of these checks need attention.
Over 10,000 active installations and 280+ five star reviews!
<a href="https://sitealert.io/pricing" rel="nofollow ugc">Get instant alerts, premium performance monitoring, and more with our premium plan!</a>
<h4>Currently Checks</h4>
WordPress Version 
This plugin checks to make sure that your site is using the latest version of WordPress.
MySQL or MariaDB Version 
This plugin checks to make sure that your server is using a recent version of the database software.
PHP Version 
This plugin checks to ensure that your server is running a version of PHP that is still receiving security updates.
Plugin Updates 
This plugin checks to make sure all your plugins are up to date.
Inactive Plugins 
This will check to ensure that you do not have any inactive plugins.
Admin Username 
This check ensures that you do not have a user with the username of “admin” on your site.
Plugins No Longer Being Supported 
This plugin checks to see if you have any plugins installed that are no longer supported by the developer.
Theme Updates 
This plugin checks to make sure all of your themes are up to date.
SSL 
Checks to see if you have SSL on your site.
File Editor 
Checks if your site has disabled the file editor.
Spam Comments 
Checks to make sure you don’t have too many spam comments.
<h4>Need more?</h4>
Check out our affordable <a href="https://sitealert.io" rel="nofollow ugc">premium plan</a> that includes:
Email Notifications 
Receive summaries for all your sites including any warnings, broken links, and more!
Uptime Monitoring 
Get notified immediately via SMS or Email if your site goes down.
Page Speed Monitoring 
Keep track of how fast your site is loading.
Email Deliverability Monitoring 
SiteAlert will alert you if emails from your site are no longer being delivered.
Broken Link Monitoring 
Discover any broken links on your site before your visitors do.
Broken Images Monitoring 
Get notified if you have any broken images on your site.
Blacklist Monitoring 
SiteAlert will monitor dozens of lists and alert you if your site is blacklisted.
Moz Domain Authority Monitoring 
Monitor changes in your site’s Moz Domain Authority.
Alexa Rank Monitoring 
Monitor changes in your site’s Alexa Rank.
Accessibility Monitoring (Beta) 
SiteAlert will scan your site an alert you of potential accessibility concerns.
<a href="https://sitealert.io" rel="nofollow ugc">Learn more about our premium plan!</a>
<h4>Make Suggestions Or Contribute</h4>
SiteAlert <a href="https://github.com/SiteAlert/sitealert-wordpress-plugin" rel="nofollow ugc">is on GitHub</a>!
Optional REST API 
If you are a developer, this plugin integrates with the REST API. The endpoints can be enabled from the settings tab of the “SiteAlert” page in the tools menu.

SiteAlert (Formerly WP Health)

Peace of mind that your site is secure and running smoothly. Performance monitoring, security checks, and instant alerts if your site goes down.

LukStack Uptime Monitor vs SiteAlert (Formerly WP Health)