What are some alternatives?
When comparing Lndr and Microsoft Visual Studio, you can also consider the following products
The Landing Page Cookbook - A guide for makers who want to create better landing pages.
Xcode - Xcode 4 is the new version of Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.
Landingfolio - The best landing page designs for your inspiration.
IntelliJ IDEA - Capable and Ergonomic IDE for JVM
Landing Pages in MailChimp - Easy to build, custom landing pages for free
Eclipse - Eclipse is an open source community, whose projects are focused on building an open development platform comprised of extensible frameworks, tools and runtimes for building, deploying and managing software across the lifecycle.