What are some alternatives?
When comparing The Landing Page Cookbook and Lndr, you can also consider the following products
Landingfolio - The best landing page designs for your inspiration.
Landing Pages in MailChimp - Easy to build, custom landing pages for free
Carrd - Simple, responsive one-page site creator.
Generator by DesignModo - Easy way to make a landing page for your startup
Ship - Fast, native issue tracking for software projects