Best apps to connect to FTP server

Open Source

WinSCP is a free and open-source SFTP, FTP, WebDAV and SCP client for Microsoft Windows.

Commercial

Transmit is an FTP client for OS X. Developed by Panic, Transmit is shareware.

Open Source

Cyberduck is an open source client for FTP and SFTP, WebDAV, and cloud storage.

Open Source

FireFTP is a free, open-source, cross-platform FTP client for Mozilla Firefox in the form of an add-on.

Find apps to do interesting things:

Cut one MP3 audio file to multiple small MP3 audio files.

Connect to remote FTP server using FTP protocol

recognize music by providing a music file.

Play online games with friends

create and edit spreadsheet documents.

Backup files online