There are lots of free 3rd party ftp client softwares has been developed, but what you dont wish to install ftp software and still thinking to use ftp through browser. You can install an FTP client on your Firefox browser easily. The Plugin is FireFTP, It is a free, secure, cross-platform FTP client for Mozilla Firefox which provides easy and intuitive access to FTP servers.

1. Go to Here using your Firefox browser and click “Add to Firefox”.

2. A pop up will show up and click install now button.

3. When installation is finish, another pop up will appear prompting asking you to restart Firefox. Click “Restart Firefox”.

4. Now that FireFTP is installed, you can access it by going to “Tools ==> FireFTP”.

Download latest version of Firefox from here