Are Sybase's own ASE ODBC drivers for Windows x64 available for free? If not, does anyone know of a cheaper (preferably free!) alternative?
I believe the ODBC drivers are available as part of the Sybase SDK, but I only require the ODBC drivers, not the rest of the gubbins that comes with the SDK.
This question is old, but I'll answer anyway.
Sybase Open Client is licensed per-seat and they don't provide download access to software without a valid support identifier.
There's an implementation called FreeTDS which is available for Unix/Linux and jTDS which is a Java implementation. I believe the latter works on Windows (although I haven't used it).