The latest version of cURL, 7.18.1, has been released for OpenVMS and is
available for download.

The location is

This is the binary and object library distribution of the cURL 7.18.1
release. See the readme.vms file in the zip for usage information. The
zip files contain executables and objects built with OpenSSL, hpSSL and
without SSL support. The files are in architecture specific zips.

The OpenSSL and noSSL versions are self-contained in that you can run
these programs without any other software on the system. For the hp SSL
version, you will need to have hp's SSL product installed.