FireFTP is a free, open-source, cross-platform FTP client for Mozilla Firefox in the form of an add-on. Developed by Nightlight Productions
License: Open Source
BitKinex is a robust FTP client with advanced features suitable for professional users, while FireFTP is a lightweight and free option best for casual users who need basic FTP functionality. The choice between the two depends on the complexity of the user's needs and their operating system preferences.