The landing pages capture the information of every visitor like his phone number, email id, name and other such details. Conversion is made easier with the landing pages as they do not allow the visitors to drift to some other website. Instapage is the most popular alternative for LeadPages. The next in the row is ClickFunnels and both of these are the two best alternatives to LeadPages.
Unbounce also lets you create sticky bars for your site. These bright forms draw attention to the offers and help to get more conversions without paying for more traffic. The editor allows you to add pop-up windows (which are called overlays here) on exit, on arrival, after a delay, on a scroll, or on click. There are plenty of pop-up templates to choose from, and you may also customize them. This feature is not available with Instapage.