The Association for Computing Machinery’s substantial ACM Digital Library is now free until the end of June 2020. Includes magazine and journals. A test shows that the most recent issues of these are included. There doesn’t appear to be a log-on requirement, they’re just all free to visitors. There’s also a handy unified search-box…
Open Access discovery wranglers may find the ACM workflow handbook Data Cleaning (July 2019) of special interest.