AI · alternatives · 2026
24 alternatives to Watcher37
Get notified when web pages change, encrypted.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Watcher37 launched in 2023; newer entries below may have overtaken it.
- 1
I built Site Spy after missing a visa appointment slot because a government page changed and I didn’t notice for two weeks. It watches webpages for changes and shows the result like a diff. The part I think HN might find interesting is that it can monitor a specific element on a page, not just the whole page, and it can expose changes as RSS feeds. So instead of tracking an entire noisy page, you can watch just a price, a stock status, a headline, or a specific content block. When it changes, you can inspect the diff, browse the snapshot history, or follow the updates in an RSS reader. It’s…
Mar 2026 · sitespy.app · its alternatives →
- 2
Changed▲169Monitor and get push notifications when a website changes
2018 · apps.apple.com · its alternatives →
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- 4
Best and simplest tool for website change detection, web page monitoring, and website change alerts. Perfect for tracking content changes, price drops, restock alerts, and website defacement monitoring—all for free or enjoy our SaaS plan! - dgtlmoon/changedetection.io
2022 · github.com · its alternatives →
- 5GN
After reading about what happened with NightOwl yesterday [0], I thought about what it would take to be aware of things like that in the future. I created ToSNotify to automatically notify you when a website's terms change. A harder problem I've been thinking through is how to know which terms to track, since it'd be a pain to add every site I have an account with. One idea I had is to automatically get terms for apps you have installed from the app store. Any other ideas/feedback are appreciated! [0]: https://news.ycombinator.com/item?id=37052508
2023 · tosnotify.com · its alternatives →
- 6
Telegram & Email notifications for crypto & NFT transactions
2023 · metla.com · its alternatives →
- 7
- 8MW
2021 · webtrackr.io · its alternatives →
- 9
PHunted▲190Be notified if a site you're browsing has been hunted or not
2014 · phunted.com · its alternatives →
- 10
DomainWatchBot▲116A bot that tells you when your domains are about to expire
2017 · its alternatives →
- 11
- 12
2015 · github-file-watcher.com · its alternatives →
- 13
- 14
- 15
Notify Me▲22Simple website update tracking and monitoring tool
2024 · notify-me.rs · its alternatives →
- 16
- 17DG
2017 · dffer.com · its alternatives →
- 18
Monitor website changes around the clock and get alerts in Discord, Telegram, Slack, Google Sheets and many more apps - no code or technical skills needed!
2019 · monitoro.xyz · its alternatives →
- 19
Get instant alerts when your website goes down.
2023 · uptime-monitor.io · its alternatives →
- 20
2021 · chrome.google.com · its alternatives →
- 21
Website change alerts, made simple.
Jan 2026 · changewatch.vercel.app · its alternatives →
- 22
Monitor your websites 24/7. Get instant downtime alerts.
Jun 2026 · pingwatch.netlify.app · its alternatives →
- 23
- 24
Subscribe to updates on any web page with the power of AI
Jan 2026 · changeflow.com · its alternatives →
Also compare
- I built a tool that watches webpages and exposes changes as RSS alternatives
- Changed alternatives
- Notifyz alternatives
- Changedetection.io detect changes in websites and JSON feeds alternatives
- Get notified when sites update their terms of service alternatives
- Crypto Notifications for Metamask alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →