Official distribution for Version 11 has mostly ceased, but there are still legitimate ways to obtain it: SAP Support Portal : Users with an active can access the SAP One Support Launchpad

If the application is no longer supported, export all data and rebuild using:

Some software repositories like Software Informer maintain links for older versions, though these should be used with caution and verified for security. Key Features of SQL Anywhere 11

This version features MobiLink , a session-based technology that handles bi-directional data exchange between a central enterprise system and thousands of remote databases.

Strong 128-bit encryption for database files and communication streams. Can You Still Download Sybase SQL Anywhere 11?

SQL Anywhere 11 reached its around 2013, and End of Extended Maintenance by 2018. That means no new security patches.