Oracle is one of the biggest IT corporations in the World, mainly offering Enterprise software and Computer hardware.

Read Quote of Aman Naimat's answer to What does Oracle sell, and who are its target customers? on Quora

So this is a very different target than Tiki Suite which is aimed at Small and medium enterprises including co-ops and nonprofit organizations. Nonetheless, there are similarities with the breadth of features each offers to their target market.

• Oracle_Database -> For end user databases: Trackers. For a more traditional relational database, use the same as Tiki: MySQL (by Oracle!) or MariaDB
• Oracle Secure Enterprise Search -> Elasticsearch
• Beehive -> Kolab , Tiki Workspaces, Wiki, Otalk & Jitsi , File Gallery, etc.
• Oracle Applications (ERP / Financials / supply-chain management, human-resource management, warehouse-management) -> This is Tiki Suite's weak spot. Please join the community to make this better! Please see: Accounting
• Oracle Linux -> ClearOS

Related links

• Alternative to Microsoft
• Alternative to Google
• Alternative to IBM