Anonymiz is a plugin to Hide your all external links with ssl and without ssl, eg: https://www.anonymiz.com/?http://yoursite.com/.
Instant Clickbank link shortner, shorterns posts, pages, categories, affiliate links, shorten external links or any URL via ref.li
Advanced WP Hide Referer is a sample Plugin to Hide your referer on all external links,eg: https://href.li/?http://yoursite.com/.
WP-HideRefer adds proxies to your outgoing links, keeping your site private!
Anonymize all your external links with the href.li service.
Create anonymous links for your articles, pages or posts.
Anonymize all your external links with the mastrcoder anonymizing service.
Hide your referer (referrer) on all external links with unrefer.com.