I just noticed Metalink support wasn't listed as a feature of the tool.
- multiple file upload on a single command line
- custom maximum transfer rate
- redirectable stderr
+ - metalink support (*13)
libcurl supports
- full URL syntax with no length limit
does not support SSLv3
*11 = requires libidn or Windows
*12 = requires libz
+ *13 = requires libmetalink, and either an Apple or Microsoft operating
+ system, or OpenSSL, or GnuTLS, or NSS