What do you mean a free alternative? You can literally selfhost changedetection
O_o it's self hosted though and free
I dont have any private server
"These plug-ins from github are out of the question, because I don't even know how to run them and I'm not always at home, so that the server (my computer) is always on and watching the sites."
You are asking on "Selfhosted" for an alternative solution to a free selfhosted app, because you are too lazy for "Selfhosting". Wow.
Self-Hosted Main
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
For Example
- Service: Dropbox - Alternative: Nextcloud
- Service: Google Reader - Alternative: Tiny Tiny RSS
- Service: Blogger - Alternative: WordPress
We welcome posts that include suggestions for good self-hosted alternatives to popular online services, how they are better, or how they give back control of your data. Also include hints and tips for less technical readers.
Useful Lists
- Awesome-Selfhosted List of Software
- Awesome-Sysadmin List of Software