Newway is a file manager for servers written with PHP. To install it, just download this repo and place the folder in your root and access it by https://yourwebsitename/foldername. You will be asked to set up an email and password to access the file manager. This application doesn't require a database. Instead, it uses a flat files as its database, which will be generated and placed outside your root directory after the completion of setup. Other things in this file manager are pretty self explantory.
Newway uses the presence of the users.json file to detect whether an email ID and password has been registered. If you forget the email ID or password registered for Newway, the only way to reset it is to delete the users.json file (thus deleting the existing registered information). After doing so, you'll be able to register a new email ID and password for Newway.