midori

This is just a very simple plugin to have a unified “back to top” button / link throughout your whole blog. Juste put [retour] whenever you want the link to the top to appear.

scrollup

Shortcode plugin [retour] for a unified link to top style.

cubecolour

A simple and lightweight plugin to indicate external http and https links in posts, pages and custom content by appending a small diagonal arrow icon to the link.
No configuration is required just install and activate.

Indicate External Links

Very reliable has survived many Wp updates and just keeps working.

This plugin just keeps on working

Indicates external links in post, page and custom content.

scrollup vs Indicate External Links