SciCrunch adds value to existing scientific resources by increasing their discoverability, accessibility, visibility, utility and interoperability, regardless of their current design or capabilities and without the need for extensive redesign of their components or information models. Unlike more general search engines, SciCrunch provides deeper access to a more focused set of resources that are relevant to its communities, provides search strategies tailored to its communities, and also provides access to content that is traditionally “hidden” from web search engines.
More information: https://www.scicrunch.org/page/scicrunch