Frequently you need to tweak files and copy folders on your Raspberry Pi. For example here is a tweak for memory. Headless Raspberry Pi RAM Memory Tweak •
Normally you need to go into command line to edit these but of you are on Windows there is a cool utility called WinSCP which allows you to connect to RPi and edit these files.
Editing and creating files can be easy using WinSCP .
Set a connection with your RPi with “SCP” as and enter the login/password for your RPi.
WinSCP is an open source free SFTP client, FTP client, WebDAV client and SCP client for Windows. Its main function is file transfer between a local and a remote computer. Beyond this, WinSCP offers scripting and basic file manager functionality.
Go here to download WinSCP :: Download
For Mac OSX unfortunately there is no port but there are reports that it runs very well on Wine. The other option is to run under a Windows VM.