Monst is a great collection of flexible & creative landing page templates to promote your Software, App, SaaS, Startup or business projects.s and all modern technology company and software development websites.. Easy to set up, customizable and designed with professionalism in mind, Monst will help you create an impressive website in a matter of minutes. It offers everything you need to build an online profile for your business including portfolio pages, blogs, testimonials and personal profile pages.