Open Source JavaScript FTP Clients

LeechCraft is a cross-platform modular "internet-client" application. It has plugins that allow one to browse the web, chat via instant messaging (like Jabber or IRC), read RSS/Atom feeds, download files via BitTorrent, Direct Connect and other protocols, play media files and much more.

net2ftp is a web based FTP client. Use it at http://www.net2ftp.com or install it on your own web server (PHP needed, MySQL optional). Features: browse, copy/move/delete files and directories recursively, upload, download, edit, view code with syntax highlighting, zip and unzip. net2ftp now also supports FTP over SSH.

Monsta FTP is a lightweight open-source FTP client you can install on your server to manage your files through any browser, and free yourself from desktop software, forever!

AstraFTP is a desktop FTP client, similar to FileZilla, built with Electron. It provides a clean and intuitive dual-pane interface for browsing local files and remote FTP directories, making it easy to manage file transfers between your computer and an FTP server. Designed as a traditional desktop application rather than a web service, AstraFTP runs natively on your computer and uses Electron IPC for secure communication between the user interface and the FTP backend. AstraFTP supports standard FTP connections in passive mode and includes all the essential tools for everyday FTP management, including connecting to FTP servers, browsing directories, uploading and downloading files, renaming and deleting files or folders, creating new directories, and monitoring transfer activity through a dedicated transfer panel.

A powerful Newsletter/ Mass Mailer script with built-in ftp client and wysiwyg editor. Ability to set custom attributes for members, queue and send mails at a later time. Easy database backup. Easy integration with the web template.

Open Road: Get your files on the go. Open Road is a simple web based FTP client with a nice interface. Try out the demo. (Runs on PHP servers, created using haXe).

PHFTP ( PHP HTTP FTP ) is a simple and fast Web FTP application. You can upload, download and administer files on FTP servers without a local FTP client, even if you are behind firewalls and proxies.

Weeble File Manager is a web based file manager / ftp client, built on php4. It allows users to Copy, Move, Rename, Upload, Download, & Edit files on an FTP server, through their web browsers.

Zelotypisti FTP :: Browse|Edit|Upload :: Webbased FTP Client + Text/Graphical Editor

The ftpAnywhere project,which is is written in PHP and JavaScript,is based on the purpose of getting access to ftp site anywhere even if there's no ftp client,with ftpAnywhere,as long as you've got a browser,you can ftp.

kraFTPaper is a modern FTP client and framework for the web written in PHP5 using a templated AJAX-powered interface, meant for a prompt and broad adoption.