SAP NetWeaver Portal vs SharePoint

SAP NetWeaver Portal
SAP NetWeaver Portal is one of the building blocks in the SAP NetWeaver architecture. With only a Web Browser, users can begin work once they have been authenticated in the portal which offers a single point of access to information, enterprise applications, and services both inside and outside an organization. The Netweaver Portal also provides the tools to manage this knowledge, to analyze and interrelate it, and to share and collaborate. With its coherent interface, role-based content, and personalization features, the portal enables you to focus exclusively on data relevant to your daily decision-making processes.
SharePoint's multi-purpose platform allows for managing and provisioning of intranet portals, extranets and websites, document management and file management, collaboration spaces, social networking tools, enterprise search, business intelligence tooling, process/information integration, and third-party developed solutions. SharePoint can also be used as a web application development platform. SharePoint alternatives for small business are: Office 365, Box, G Suite, Zoho. There are also free open-source alternatives to Sharepoint - Alfresco, Nuxeo, Liferay Portal.
Face to face in the news:

2003 - SAP updates its portal software to catch up with SharePoint

SAP released the latest version of its portal software SAP NetWeaver Portal that helps companies integrate information from different business processes. Among the upgrades to SAP Enterprise Portal are new collaboration tools, expanded language capabilities and support for the Unix operating system. Portal software gathers data from business applications, databases, electronic documents, and the Web and aggregates it into one place so employees can find information quickly. Unix operability is a big step forward for SAP and will allow the portal software to work with server hardware built by vendors such as Hewlett-Packard, IBM and Sun Microsystems. SAP's portal system has historically catered to businesses running Microsoft Windows.