Without a doubt! You may use Salesforce Sites or Community Builder to create customized sites and applications for your Salesforce company.
Salesforce is a fantastic marketplace with a lot of exceptional tools to solve complex business problems. However, because Salesforce does not want to fill the marketplace with different tools that solve the same problem, Salesforce requires a business model to analyze why your app should be listed on AppExchange.
Yes, you may design an out-of-the-box app that addresses a customer's business needs and distribute it for free.
Salesforce is a fantastic marketplace with many out-of-the-box tools to solve complex business problems. As a result, Salesforce does not want to clutter the marketplace with multiple tools that solve the same problem. This is why Salesforce inquires about your business model to determine why your app should be listed on AppExchange and what business problem it will solve.
Along with the free applications available on the platforms, AppExchange allows vendors to publish apps that solve business problems and provides enterprises with various monetization options.