Slack Technologies, also known as Slack, was a company operating a messaging platform that enables teams to communicate. It provides real-time messaging, archiving, and searching services. The Slack platform has been owned by Salesforce since 2021 when Salesforce acquired Slack Technologies.
An affiliate of Stanford University, HighWire works to "facilitate the digital dissemination of more than 3000 journals, books, reference works, and proceedings." The advanced search feature allows you to specify exactly what you are looking for and check through all resources or only open access resources.