Site Spy monitors websites for changes and shows you exactly what's different with visual diffs.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Online
- Google Chrome
- Software as a Service (SaaS)
- Mozilla Firefox




Trackly is described as 'Monitors web pages and tells you when they change. Beautifully!' and is a website monitoring tool in the os & utilities category. There are more than 25 alternatives to Trackly, not only websites but also apps for a variety of platforms, including Mac, Windows, Google Chrome and Mozilla Firefox apps. The best Trackly alternative is Distill Web Monitor, which is free. Other great sites and apps similar to Trackly are WebSite-Watcher, HARPA AI, Update Scanner and Wachete.
Site Spy monitors websites for changes and shows you exactly what's different with visual diffs.




Urlooker is a service for monitoring web pages. Just select a page area, and you'll receive notifications about changed content on your Email, Zapier or IFTTT workflows.
PageMonitor.io is a powerful web monitoring service that enables users to track changes to web pages and receive notifications when changes are made. The service allows users to easily set up monitoring tasks for specific web pages by selecting areas to watch for changes.


Changeflow is a website change detection SaaS built for competitive intelligence, regulatory compliance, and media monitoring. AI summaries tell you what's changed and why it matters. Built for teams with shared workspaces, API access, and timestamped archives for compliance.



Ads Monitor service regularly crawls your site and stores visible AdSense ads in the database. You can receive a daily email report with top ads or analyze them on the Ads Monitor site.



Introducing Web Expedition, a Safari extension for macOS that transforms how you monitor dynamic web content. Designed for anyone who needs to keep track of updates across various websites, this tool offers a comprehensive set of features tailored to enhance user experience.



Track websites using Thieves AI agents. Set natural language conditions for websites and get a email, Telegram, Discord, Webhook, REST API once your conditions has been met.

WebMonitors is a cloud-based SaaS platform for monitoring website changes. It allows users to track modifications to any webpage, including those behind logins, by monitoring specific elements like text, images, and HTML.




Tryxie allows you to visually monitor any site with ease! Get notified for every change in a URL and get updated high-quality screenshots without ads.

MCP-native website monitoring that tracks changes on any public URL and delivers AI-powered summaries through ChatGPT, Claude, or the web dashboard.



The service has been developed specifically for monitoring changes at competitors' websites. With the help of SORGE, you can watch changes at sites of any size, whether overall, or within specific sections or pages.

