Yes, it is free but, the free version does not includes all the features
You can store upto 100 in the free version. Code Drive's storage limit will vary based on your account type.
It will be calculated based on the traffic. In an average maximum execution timeout will be from 5 seconds to 15 seconds
No, currently there are no memory limits
Yes, command line arguments are supported. You can enter your command line variables on the text box placed in top right corner.
No, Internet access is not available. Hence internet based programs won't work on compile.work