Michal Ludvig

smtp-cli is a powerful SMTP command line client with a support for advanced features, such as STARTTLS, SMTP-AUTH, or IPv6 and with a scriptable message composition capabilities supporting anything from simple plain-text messages right up to building complex HTML emails with alternative plain-text ... [More] part, attachments and inline images. It's also a convenient tool for testing and debugging SMTP servers' setups. Even the hardcore mail admins used to typing the SMTP protocol over telnet need a specialised tool when it comes to verifying encryption settings of their TLS enabled server with a subsequent user authentication. Such things are pretty hard to type into a telnet session by hand. [Less]

s3cmd - scriptable command line tool for management of Amazon S3 storage and for transferring file to/from Amazon S3. Great for remote backups.