HP Helion Eucalyptus supports Amazon Web Services EC2 and S3 interfaces, among others, and can be used with many of the EC2 and S3 tools and libraries. If you're interested in seeing your client tool or library added to our list, you can add your tool to the wiki directly.
Euca2ools are HP Helion Eucalyptus supported command-line tools.
HP Helion Eucalyptus is designed to be AWS-compatible, and can be used in conjunction with many AWS tools and libraries. For a full list of recommended tools, please visit the wiki.