AlertSite

AlertSite

SmartBear
+
+

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About

AlertSite is the 'Early Warning System' you can trust to monitor your websites, web apps, and APIs from all over the world and within your private networks. You shouldn't be burdened by the fear and the consequence of whether an alert is real or false. AlertSite monitors your UI and API layer for availability, performance, and functionality without the alert fatigue of other monitoring tools. Creating Web and API monitors in AlertSite is intuitive and effortless. Codelessly add new web monitors with DejaClick, our point-and-click web recorder, and API Monitors in just a few clicks using an API Endpoint URL or OpenAPI Specification file. Or, reuse test cases like Selenium Scripts or SoapUI tests to create new monitors. Don't let false alerts and erroneous data cloud your visibility into application health.

About

PerfDelta is a web-based website speed testing and monitoring service for SEO specialists, agencies, and in-house web teams. Its free test scans up to three pages on mobile and desktop, combining real-user Core Web Vitals from the Chrome UX Report with Lighthouse lab measurements. Reports compare a site with up to two competitor domains and a benchmark of previously tested sites, show page-weight breakdowns and request timelines, identify site technologies, and estimate savings in prioritized recommendations naming affected files. Paid plans add scheduled monitoring, performance budgets, email alerts, report history, and PDF exports; Agency and Scale plans also provide CSV export, public dashboards, and a REST API. MCP access lets compatible AI agents request tests and retrieve results. Reports can be shared with clients for performance audits and ongoing site work.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

IT professionals

Audience

SEO specialists, agencies, and in-house web teams.

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

€23/month
A free plan is available. The Solo plan costs €23/month net with monthly billing, or €230/year net with annual billing. Higher plans add scheduled monitoring, alerts, report history, exports, and API access.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

SmartBear
Founded: 2009
United States
smartbear.com/product/alertsite/

Company Information

PerfDelta
Founded: 2026
Berlin, Germany
perfdelta.com

Alternatives

AlertBot

AlertBot

InfoGenius

Alternatives

Super Monitoring

Super Monitoring

SITEIMPULSE
Site24x7

Site24x7

ManageEngine

Categories

Categories

Speed Test Supported

PageSpeed Insights tests one URL and shows one score. PerfDelta tests three pages per run, puts the results next to up to two competitors and a benchmark of every domain tested so far, and keeps the history of every measurement. The free test needs no account.

Website Monitoring Supported

Core Web Vitals monitoring with competitor benchmarks and alerts. Paid plans monitor 25 to 500 URLs daily or weekly, every 6 hours from Agency, with daily CrUX field data, 3 to 10 tracked competitors, performance budgets per project and URL, email alerts when a score drops by 10 points or more and a weekly report.

System Monitoring Features

Alerts / Notifications Supported
Antivirus Management Not Supported
Data Backup / Recovery Supported
Device Monitoring Supported
Inventory Management Supported
Patch Management Not Supported
Policy-based Automation Supported
Remote Monitoring Supported
Reporting / Analytics Supported
Risk Analysis Not Supported
Server Monitoring Supported
Service Configuration Management Supported

Website Monitoring Features

Availability Testing Not Supported
Event Logs Not Supported
Event-Based Notifications Supported
FTP Monitoring Not Supported
Mail Server Monitoring Not Supported
Maintenance Scheduling Not Supported
Performance Metrics Supported
Real Time Monitoring Not Supported
Transaction Monitoring Not Supported
Uptime Reporting Not Supported

Integrations

BitBar Supported
BlueSwan Supported
Claude Not Supported
Google Analytics Supported
HostAccess Supported
Lighthouse Not Supported
Model Context Protocol (MCP) Not Supported
PagerDuty Supported
Perfecto Supported
ReadyAPI Supported
Selenium Supported
ServiceNow Supported
Slack Supported
Splunk AppDynamics Supported
Splunk Cloud Platform Supported
Splunk Enterprise Supported
Splunk On-Call Supported
Swagger Supported
TestArmy Supported
Zapier Not Supported

Integrations

BitBar Not Supported
BlueSwan Not Supported
Claude Supported
Google Analytics Not Supported
HostAccess Not Supported
Lighthouse Supported
Model Context Protocol (MCP) Supported
PagerDuty Not Supported
Perfecto Not Supported
ReadyAPI Not Supported
Selenium Not Supported
ServiceNow Not Supported
Slack Not Supported
Splunk AppDynamics Not Supported
Splunk Cloud Platform Not Supported
Splunk Enterprise Not Supported
Splunk On-Call Not Supported
Swagger Not Supported
TestArmy Not Supported
Zapier Supported
Claim AlertSite and update features and information
Claim AlertSite and update features and information
Claim PerfDelta and update features and information
Claim PerfDelta and update features and information