It is a powerful web application for SaaS startups. It is built with Laravel framework which is the most popular framework in php. You can start your SaaS business right now without any expensive infrastructure.

Info: https://codecanyon.net/item/elitkit-all-in-one-saas-business-suit/27503287

This script includes many powerful functions and a module for managing various types of small businesses. You can create different types of pricing plans and sell them to your customers monthly / yearly. You don’t need any additional website or landing page for this software. This script comes with a default landing page with all the necessary fears, as well as an SEO optimized landing page. The client will pay you monthly / yearly, but you don’t need to pay monthly / yearly for this scenario. Only one time purchase and lifetime use.