Software to access S3 bucket
From Curnagl cluster (command line tools)
Rclone
awscli
From your laptop or a workstation
Command line tools
Following the official documentation, you can install Rclone (https://rclone.org/install/) or awscli (https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html) on your laptop/workstation.
Then both tools can be used as described in the above part dedicated to use from Curnagl cluster.
Cyberduck
Cyberduck can be installed from https://cyberduck.io/download/.