For a while, the O'Reilly subscription was included in the $99/yr ACM membership. Then they stopped offering O'Reilly for a bit. Then they brought it back as part of the $75 skills add-on.
I feel like this is a little known secret (discount via ACM) that more folks should know about. Hopefully this post helps spread the word.
> ACM is pleased to share an important milestone for the computing field. Beginning January 2026, all ACM publications and related artifacts in the ACM Digital Library will be made open access.
If your paying $500 for an O’Reilly subscription, then the $99 membership plus $75 add-on for O'Reilly would seem to make it so even if you don't use any of the other facilities:
> unlimited access to ACM's collection of thousands of online books, video courses, interactive sandboxes, practice labs, and AI-enabled tools from O'Reilly and Skillsoft Percipio
I don’t think you get the same level of access though? I tried an O’Reilly subscription directly then went the ACM route and remember being disappointed that it was a more limited subscription.