LeadPages is one of the top pieces of software – as a service no less – for designing and testing landing pages today. It has a lot of great templates utilizing modern designs with fast code. It has great email capture forms for opt-ins that hook right into your existing mailing list management software. They have extremely easy split testing as well, taking all of the guesswork out of testing changes. One of their most popular features is the LeadBox, a two-step email opt-in that has been repeatedly tested to improve signups. You can implement all of this yourself, of course, but paying a developer is often more expensive than paying the LeadPages monthly fee.
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.