For a booming and flexible option use, these bootstrap login form templates and you know all these comes with clean and efficient code so, it is quite simple and results in your faster signup process. These frame worked forms are also responsive. Most of curated selections are free to download.
Code Snippet Login form
Sign In Form with Cloud Background
This is an animated bootstrap login page template. This login form contains an animated cloud in the background to provide a pleasing look.
Eye-catchy Login Template
Log in With Facebook Connect
Bootstrap Modal Sign In Form
This template looks great on all devices due to its responsive design. Click demo and on the available page select login to view this login form.
Responsive Form with Social Button
Login Form with Progressive Button
Calendar login form
This is a calendar type login form and this can be used in a web app for any calendar login and if you want you can change the calendar image and use for other purposes.