A blacklist identifies sites known or highly suspected to be untrustworthy.
“Blacklists and whitelists share the same problem in that they attempt to externalize an evaluation process that is best internal, contextual, and iterative.” (Swauger, 2017)
Predatory Reports is an organization made up of volunteer researchers who have been harmed by predatory publishers and want to help researchers identify trusted journals and publishers for their research. The Predatory Lists aims to educate researchers and students, promote integrity, and build trust in scientific research and publications. ~The Predatory Reports team
DOAJ (Directory of Open Access Journals) is an index of diverse open access journals from around the world. It is managed by an independent, non-profit organisation.
Jeffrey Beall, a former librarian, collated a list of potential and possible predatory scholarly open access journals. However, this list was last updated in 2017. Researchers could refer this archived list to find out if the journal/publisher is blacklisted.
Review of Beall's List:
Cabells offers a paid subscription service 'Predatory Reports' that provides information on over 17,000 predatory journals.
Review of Cabells:
Anderson, R. (2017). Cabell’s New Predatory Journal Blacklist: A Review. In The Scholarly Kitchen.
Silver, A. (2017). Pay-to-view blacklist of predatory journals set to launch. Nature.
Retraction Watch tracks latest news and incidents of predatory publishing, plagiarsim, falsified data and peer-review scandals.