HttpRequest class: Perform Get, Post, Put, and Delete requests to an HTTP or HTTPS server.

IDLnetJPIP class: Stream JPEG2000 imagery from a remote JPIP server.

IDLnetOGCWCS class: Access a Web Coverage Service (WCS) server that supports the OGC standard.

IDLnetOGCWMS class: Access a Web Map Service (WMS) server that supports the OGC standard.

IDLnetURL class (deprecated): Perform Get, Put, Delete requests to an FTP or HTTP server.

JSON_PARSE: Convert a JSON string or file to an IDL variable.

JSON_SERIALIZE: Convert an IDL variable to a JSON string.

WGET: Retrieve files from a URL.