Full Screen Popup is a wordpress plugin which lets you create a quick and light weight, unblockable full screen, interstitial popup window with custom content in your site.
Lightbox Pop is a simple, attractive, non-annoying, extremely fast and light-weight responsive lightbox plugin for your WordPress.
Popup dialog box wordpress plugin allows you to create a responsive dialog box or message box with custom content in your site.
Quick Bar - Popup Notification Sidebar is a Wordpress plugin which lets you create a floating sidebar with custom content in your site.
Quick Box - Onclick Popup Notification Box allows you to create a popup box on click of a floating text which is attached to any side of the window.
XYZ WP Popup is a multi-function popup plugin for your WordPress. You can define multiple popups such as lightbox, dialog box, quick popup, full screen popup and quick bar with custom contents and configure various display settings.