Another place to download drivers - https://wiki.scn.sap.com/wiki/display/SQLANY/SAP+SQL+Anywhere+Database+Client+Download (I used SQL Anywhere 12).
Then for a linked server you can use provider string as Provider=SAOLEDB.12; Eng =DBName; Uid =user; Pwd =password; Links =tcpip(Host=MachineName);
Go to the linked server properties, Server Options, set RPC in and RPC out to true.
In Linked Servers\Providers right click on SAOLEDB.12, check Allow Inprocess.
After that you can browse the linked server catalogs.
Or you can use Sybase Central (the shortcuts appears on your desktop after the driver installation) and use an ODBC source to connect. Create ODBC source with SQL Anywhere driver, action = Connect to a running database on another computer, Host = MachineName, Server name = DBName. From there you can see all DB objects and ER Diagram or run interactive SQL.