Linkroll allows you to put links on your sidebar and control those links from the widget area. Just install the plugin and go to your widget screen.
Linkroll also comes with a short-code that you can use to put links directly into your posts. [linkroll post=”My Blog Post”] will put a link to the post called “Post Title” (requires that the post name be unique).
Linkroll is under active development, as of June 2013. It keeps getting better! The best links plugin in WordPress.