Message Bender - Backup and delete all Slack messages in bulk
Files App - Files is a beautiful single-file PHP file browser and manager that can be dropped into any dir on your server, instantly creating a gallery of files and folders.
Slack Deletron - Delete files from your Slack Workspace!
Filen - Next Generation end-to-end encrypted cloud storage. Get started with 10 GB of free space.
Public - Group chats.
Samsung Cloud - Samsung Cloud is a cloud file management application made by Samsung that lets you manage your files and folders across devices.