Life & fun · alternatives · 2026

24 alternatives to Differ

Dffer sends notifications for website changes

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. Differ launched in 2017; newer entries below may have overtaken it.

1DG
Dffer – Get notified when a website changes▲63
2017 · dffer.com · its alternatives →
2
Changedetection.io detect changes in websites and JSON feeds▲147
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 →
3
Changed▲169
Monitor and get push notifications when a website changes
2018 · apps.apple.com · its alternatives →
4
VisualPing▲133
Get notified on visual changes of a website or website area
2014 · visualping.io · its alternatives →
5
Web Monitoring by Visualping▲196
Email alert when something changes on a webpage
2017 · visualping.io · its alternatives →
6
Push.js▲236
Cross-browser solution for JavaScript desktop notifications
2016 · pushjs.org · its alternatives →
7
ChangeTower▲149
Get emailed when website content changes
2018 · changetower.com · its alternatives →
8
Notify.domainsfree tier, from $2/mo▲322
Know the moment a domain opportunity appears
Aug 2026 · notify.domains · its alternatives →
9GN
Get notified when sites update their terms of service▲190
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 →
10
Sleeping Spider▲103
Web page change monitor - track changes on any site.
2014 · its alternatives →
11
Hooks▲221
Get desktop notifications with jQuery
2014 · its alternatives →
12
Roost▲240
Push Notifications for Websites
2014 · roost.me · its alternatives →
13MW
Monitor websites for changes. Get alerted by Email, Slack and Telegram▲8
2021 · webtrackr.io · its alternatives →
14
Watcher37▲63
Get notified when web pages change, encrypted.
2023 · its alternatives →
15VM
Visually monitor changes for any webpage▲5
2017 · pixelbug.io · its alternatives →
16
KeepUpdated▲126
Automatically track changes on any website online
2014 · its alternatives →
17
TrackChanges▲110
Share what you've changed
2017 · chromewebstore.google.com · its alternatives →
18
Visual Diffs▲95
Track UX changes with visual diffs on every deploy.
2015 · speedcurve.com · its alternatives →
19
Track Any Public or Private Website’s Visual Changes▲8
2020 · youtube.com · its alternatives →
20
PageCrawl.io▲92
Track Website Changes
2019 · pagecrawl.io · its alternatives →
21
Change Detection▲10
Page change monitoring and notification services
2016 · visualping.io · its alternatives →
22
Distill Web Monitor▲5
Monitor websites, get notified when they change.
2015 · distill.io · its alternatives →
23
Monitor websites for change and get scraped data in a webhook▲49
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 →
24SW
Scheduled website screenshots with change detection▲7
2015 · screenshotapp.net · its alternatives →

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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 →