modemlooper

Allows users to log into your site with a WordPress.com user account. Adds a WordPress.com connect button to your login form.

WPConnect

Allows users to log into your site with a WordPress.com user account. Adds a WordPress.com connect button to your login form.

This is a simple sign in widget . Go to Widget and drag the Sign in widget to sidebar. Or you can use [signin] shortcode . 
Just use this shortcode and see the result yourself. If you like it please don\\’t forget to give a review. Thanks

Sign in Widget

Simple sign in widget with shortcode support

WPConnect vs Sign in Widget