Cabells' services include Journalytics (a searchable, curated database of critical information about journalytics and reputable academic journals), Predatory Reports (the only searchable database that identifies deceptive and fraudulent journals), manuscript preparation tools and a suite of powerful metrics designed to help its users find the right journals, no matter the stage of their career. -- Simultaneous Users: Unlimited
DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals. Look for journals with the green tick mark or the orange DOAJ seal of approval for indications that the journal has been vetted.
This database is useful for determining whether or not a journal is peer-reviewed/refereed. Simply enter the name of the journal and look for the Referee Jersey icon. If you see it, it is registered with the directory as peer reviewed. (Keep in mind that Ulrich's is a directory and does not necessarily evaluate the validity of the journal.)