https://en.wikipedia.org/wiki/SAP_SE
https://en.wikipedia.org/wiki/MySAP_All-in-One
http://www.sap.com/solution/lob/finance/software/business-suite-apps/index.html
Tiki Suite can be seen as a FLOSS self-hosted alternative to the various SAP apps (which are typically proprietary). SAP historically caters to large enterprises, but now has an offering for SMEs.