Any “Git diff”-like service but for when terms of conditions changes?

I'm a co-founder of https://termscout.com and our TermAlerts service does exactly what you are looking for.

We have attorneys on staff and looked into other tools, but understand that about half of the contracts that live on the web are not webpages, but versioned PDFs and could not find anyone that can catch when that occurs, so we built it ourselves.

When a change occurs we email a redline (diff) and in the process of working on a dashboard that you can see not only the version of the contract when you submitted it and the new one, but overtime be able to scroll through all previous versions of that contract too...very much inspired by Google Maps Street View timeline tool. :)

There is https://tosback.org/ or https://www.docracy.com/tos/changes for most popular services

Or

You can build your own https://github.com/pde/tosback2-data

https://monitoro.xyz does exactly this (assuming you use it with IFTTT to send updates to your favorite endpoint).

Disclaimer: I'm the author, and I'm happy to answer questions.

Follow That Page has a good diff by email service for pages that change.

https://www.followthatpage.com

I use Follow That Page to monitor about a dozen websites for things like news and events, changes to a change log.txt, and so on. It would work well for TOS and TOC web pages.

There are some interesting suggestions here.

Another (free) is https://tosdr.org , which reviews many agreements but I don't know of a diff feature in it.

I have read & then saved agreements to a common directory (with memorable names & dates) when agreeing to them, and wrote a little script (assumes *nix) that basically converts the html to text using w3m or such, shortens lines (or every long line looks different), then runs diff. Maybe I could post it at my simple site if there is interest (or see lukecall.net for an email address in the footer, and ask).

(Of course, that doesn't work for the ones that don't let you save the agreement content, short of doing a screen capture.)

(I posted my thoughts or rants about this problem at http://lukecall.net/e-9223372036854587150.html , and will add a link to this discussion as a resource.... Hm. My page links to a related discussion on slashdot.org where a minority of comments are somewhat interesting, like the one with "IAAL" in its text.)

Is there some movement to standardize ToS and such agreements, so you can just recognize "oh yeah, it's just agreement #7 again" and not have to bother further (similarly to CC or known FLOSS licenses?)

This is what https://tosback.org/ does, I believe.

VisualPing? https://visualping.io/

Not directly what you ask, but "Terms of Service didn't read" is great

https://tosdr.org/#

You can also use https://www.guardscript.com that does this for free and send you a diff in your email.

I am the founder of https://pagecrawl.io and this is exactly what can you do with the service.

I have been considering releasing a product only for tracking ToS only but haven't managed to release it yet.

https://scrapinghub.com/autoextract may help you with this, it will provide the article in a structured form which you can then diff.

Wayback machine and text diff.

You could try Diffbot.

vimdiff