Not just about science, the Open Science Directory is one of the most comprehensive resources for "open" research (that is, material that is freely available for anyone to read and access).   It currently indexes 13000 titles, and includes the Directory of Open Access Journals (DOAJ) as well as several more specialized listings.   Every subject area from Art to Education on up to Technology and Zoology is represented by hundreds of titles! 

Once you've entered the site, you click on "Access to e-journals through the Open Science Directory."  Once in, you can plunge right in searching, but instead, explore the "Subject" tab; you'll discover, for example, "Social Sciences," which has many "business" related sub-topics ("Commerce" and "Economics" are just a couple of relevant ones)

Explore more:  Click on "custom search."   You'll have two options:  The first one is just a Google Scholar search, but the second is a custom search that just searches for titles on whatever term you choose; put in "Accounting" for example, and you'll get dozens of titles devoted to the topic.