This is part of the azurecurve ClassicPress Plugins which introduces the plugins I have available for ClassicPress.
The plugin I am going to cover in this post, is a new fork of someone else's plugin; Sidebar Login.
Sidebar Login provides a widget which allows users to login from the sidebar using an AJAX enabled widget. I forked this plugin as it was no longer maintained; I've added a very small number of enhancements at the same time, but will maintain this plugin myself going forward.
The plugin can be downloaded via my Development site.