Transmit is my FTP/SFTP client of choice. By default, Transmit hides hidden/invisible/system files. As a web designer, it useful to show hidden or system files by default when working with platforms such as Wordpress (.htaccess, anyone?).
You'll need to be connected to a server to access the full View context menu mentioned below. Any server will do.
With the Transmit window active, navigate to View > Show Invisible Files. By selecting this menu item, invisible files are now shown in Transmit.
I always keep an eye on my MacBook's battery percentage—especially since, as a developer, I run a lot of resource-intensive applications.
Zach