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I like https://github.com/dgtlmoon/changedetection.io https://github.com/dgtlmoon/changedetection.io for this. Open source and free to run locally or use their

by xnx 8mo ago

I like https://github.com/dgtlmoon/changedetection.io https://github.com/dgtlmoon/changedetection.io for this. Open source and free to run locally or use their Saas service.

vkuprin 8mo ago
Yep, changedetection.io is a good project. With Site Spy, I wanted to make the browser-first workflow much easier: install the extension, connect it to the dashboard, click the exact part of the page you care about, and then follow changes as diffs, history, or RSS with very little setup. I can definitely see why the open-source / self-hosted route is appealing too.
- xnx 8mo ago
  Changedetection has an extension too: https://chromewebstore.google.com/detail/changedetectionio-website/kefcfmgmlhmankjmnbijimhofdjekbop https://chromewebstore.google.com/detail/changedetectionio-w...
- shaunpud 8mo ago
  Does your project use changedetection.io behind the scenes? When I look at the _All Watches Feed_ the contents of the rss file include; <?xml version='1.0' encoding='UTF-8'?> <rss xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/" version="2.0"><channel><title></title><link>https://changedetection.io</link><description>Feed description</description><docs>http://www.rssboard.org/rss-specification</docs><generator>python-feedgen</generator><lastBuildDate>Thu, 12 Mar 2026 10:10:10 +0000</lastBuildDate></channel></rss>
  - msp26 8mo ago
    see: https://news.ycombinator.com/item?id=47349069 https://news.ycombinator.com/item?id=47349069
  - vkuprin 8mo ago
    Yes — it's a fork of changedetection.io. I went into more detail here: https://news.ycombinator.com/item?id=47349141 https://news.ycombinator.com/item?id=47349141. The RSS link you spotted was a leftover, already fixed
raphman 8mo ago
There's also https://github.com/thp/urlwatch/ https://github.com/thp/urlwatch/ - (not aware of any SaaS offer - self-hosted it is).
- vkuprin 8mo ago
  Yep, urlwatch is a good one too. This category clearly has a strong self-hosted tradition. With Site Spy, what I’m trying to make much easier is the browser-first flow: pick the exact part of a page visually, then follow changes through diffs, history, RSS, and alerts with very little setup
pelcg 8mo ago
Looks cool and this can be self hosted and it is for free. Nice will try this out!
beepbooptheory 8mo ago
Sure but this one has a MCP server, costs money, and was presumably made last night!
- nicbou 8mo ago
  It's been around for a while and recommended by many. I tried it myself and it's okay.
  - KomoD 8mo ago
    Are you referring to OP's site? The domain was registered 2026-01-16 so it certainly hasn't been around for a while.

by xnx 8mo ago

I like https://github.com/dgtlmoon/changedetection.io https://github.com/dgtlmoon/changedetection.io for this. Open source and free to run locally or use their Saas service.

vkuprin 8mo ago

Yep, changedetection.io is a good project. With Site Spy, I wanted to make the browser-first workflow much easier: install the extension, connect it to the dashboard, click the exact part of the page you care about, and then follow changes as diffs, history, or RSS with very little setup. I can definitely see why the open-source / self-hosted route is appealing too.

xnx 8mo ago
Changedetection has an extension too: https://chromewebstore.google.com/detail/changedetectionio-website/kefcfmgmlhmankjmnbijimhofdjekbop https://chromewebstore.google.com/detail/changedetectionio-w...
shaunpud 8mo ago
Does your project use changedetection.io behind the scenes? When I look at the _All Watches Feed_ the contents of the rss file include; <?xml version='1.0' encoding='UTF-8'?> <rss xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/" version="2.0"><channel><title></title><link>https://changedetection.io</link><description>Feed description</description><docs>http://www.rssboard.org/rss-specification</docs><generator>python-feedgen</generator><lastBuildDate>Thu, 12 Mar 2026 10:10:10 +0000</lastBuildDate></channel></rss>
- msp26 8mo ago
  see: https://news.ycombinator.com/item?id=47349069 https://news.ycombinator.com/item?id=47349069
- vkuprin 8mo ago
  Yes — it's a fork of changedetection.io. I went into more detail here: https://news.ycombinator.com/item?id=47349141 https://news.ycombinator.com/item?id=47349141. The RSS link you spotted was a leftover, already fixed

raphman 8mo ago

There's also https://github.com/thp/urlwatch/ https://github.com/thp/urlwatch/ - (not aware of any SaaS offer - self-hosted it is).

vkuprin 8mo ago
Yep, urlwatch is a good one too. This category clearly has a strong self-hosted tradition. With Site Spy, what I’m trying to make much easier is the browser-first flow: pick the exact part of a page visually, then follow changes through diffs, history, RSS, and alerts with very little setup

pelcg 8mo ago

Looks cool and this can be self hosted and it is for free. Nice will try this out!

beepbooptheory 8mo ago

Sure but this one has a MCP server, costs money, and was presumably made last night!

nicbou 8mo ago
It's been around for a while and recommended by many. I tried it myself and it's okay.
- KomoD 8mo ago
  Are you referring to OP's site? The domain was registered 2026-01-16 so it certainly hasn't been around for a while.