Packages make Pulsar do amazing things.
clipboard-master
The ultimate tool to manage your clipboard history within Atom. Copy and paste up to five item from your new clipboard history.
px-rem-tooltip
Show a tooltip with the current CSS Unit converted to either Pixels or REMs.
rc-remote-ftp
Enable browsing remote FTP/FTPS/SFTP just like the built-in Tree View. Requires a project.