There are 4 repositories under thephpleague topic.
Abstraction for local and remote filesystems
Flysystem Adapter for Dropbox [ABANDONED] replacement: https://packagist.org/packages/spatie/flysystem-dropbox
:cd: A backblaze adapter which can be used with flysystem(http://flysystem.thephpleague.com/)
Flysystem Adapter for the FTP with cURL implementation
Instagram for Business & Creators Provider for the OAuth 2.0 Client