I have been struggling for about a week to download arXiv articles as mentioned here: http://arxiv.org/help/bulk_data_s3#src.
I have tried lots of things: s3Browse
s3Browse
Try downloading s3cmd version 1.6.0: http://sourceforge.net/projects/s3tools/files/s3cmd/
s3cmd
1.6.0
$ s3cmd --configure
Enter your credentials found in the account management tab of the Amazon AWS website interface.
$ s3cmd get --recursive --skip-existing s3://arxiv/src/ --requester-pays