As you might know TDConnectivity plugin needs to be installed for connecting to QC. TDConnectivity is an exe file and i do not think an equivalent alternative is available for MAC/Linux.
Since your version is QC10 REST is not an option either.
My suggestion would be to create a web service in a windows environment and connect to that service from MAC using a client.
Since your version is QC10 REST is not an option either.
My suggestion would be to create a web service in a windows environment and connect to that service from MAC using a client.