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TRAMP (Transparent Remote Access, Multiple Protocols) is a package for editing remote files, similar to AngeFtp or efs. Whereas the others use FTP to connect to the remote host and to transfer the files, TRAMP uses a remote shell connection (rlogin, telnet, ssh). It can transfer the files using rcp or a similar program, or it can encode the file contents (using uuencode or base64) and transfer them right through the shell connection.| www.emacswiki.org
Ido lets you interactively do things with buffers and files. As an example, while searching for a file with C-x C-f, ido can suggest the files whose paths are closest to your current string, allowing you to find your files more quickly. Created by KimStorm, it has been built into Emacs since version 22.| www.emacswiki.org