Elsevier acquired SSRN for an undisclosed figure.
Nature makes a good point: In an environment where more and more is available free online, “Elsevier is starting to attract more academics to its sites by providing services such as online scholarly social networks and preprint servers.”
That being said, this is a great resource for visualizing scholarly communication workflows, from start to finish.
If you click on the “Datacards” tab you can select different workflow collections. For example, Elsevier. This will show you Elsevier products that can be used in each step of the process. The great thing, Open Science is also an collection. Also, under the “Datacards” tab you will find all 101 tools listed. Clicking on the tool will bring you to a page with more information (example: Paperity)
Elsevier can’t buy everything—and even more than that, open source developers have a plethora of open scientists/scholars with a plethora of needs.