Every form is intended to serve some purpose. Your first step is to identify the purpose, i.e., what you will be using the form for. Decide whether it will be used for official or personal use, whether you need to embed logos in it, whether the printable form will need to filter any data from the company software etc. Once you have identified the function the printable form is expected to perform, you can easily decide which software or online program you need to create the form.
Among other popular templates for application forms are rental application forms used by landlords to rent out their homes or those used by equipment rental companies. As long as you have a clear idea of what type of application form you need a template for it can easily be found online.