Monsta FTP!

Seafile is a file hosting software system. Files are stored on a central server and can by synchronized with personal computers and mobile devices via the Seafile client. Files can also be accessed via the server's web interface. Seafile's functionality is similar to other popular services such as Dropbox and Google Drive, with the primary difference being that Seafile is free and open-source, enabling users to host their own Seafile servers without artificially imposed limits on storage space or client connections. »

Pydio is the mature alternative to Dropbox and Box.com, to build your own box, on your own servers.

FilesAnywhere offers free 1GB online file storage, with cloud storage solutions for Internet backup, file sharing, secure FTP hosting, and web folders for collaboration. Come enjoy the security of FilesAnywhere.

HRCloud2 - A fully featured home-hosted Cloud drive and personal assistant that allows users to create and manage user accounts for friends and family, access files from anywhere, convert images, media, documents, presentation files, 3d models, and archives to other formats. Perform simple image resizing and editing, stream media, create playlists, search for files, OCR images and PDF's, share files with friends and more!

FileRun is a full featured PHP web based file manager with a very easy to use ajax user interface. Upload and download large files for easy sharing.

net2ftp is a web based FTP client. It is mainly aimed at managing websites using a browser. Edit code, upload/download files, copy/move/delete directories recursively, rename files and directories -- without installing any software.

LimboMedia is a free and easy-to-use information and media server making your bookmarks, todos, notes, images, music, videos and files available everywhere: At home via DLNA/UPnP and outside in your browser with a nice HTML5 web-interface.

FileVista turns your web site into a web file server in few minutes and lets you share files with your clients or staff using any browser or device.

BytesFall Explorer (bfExplorer for short) is a web-based file manager written in PHP and JavaScript and licensed under the GNU GPL. It allows you to upload, download, view, edit, copy, move/rename, compress and change permissions of a single file/directory or a group of files/directories. It's also possible to create files and directories and execute shell commands. An SQL engine is used to store the users for the authentication (currently MySQL and PostgreSQL are supported). BytesFall Explorer has an interface similar to Windows Explorer. »

KCFinder is free open-source replacement of CKFinder web file manager.

What is Mollify?

QuiXplorer is a multi-user, web-based file-manager.It allows you to manage and/or share files over the internet, or an intranet.