JotForm is an excellent alternative to Google Forms and Microsoft Forms because it offers capabilities that Google Forms and Microsoft Forms don't offer. For example, without the need for a third-party addon you can set limits on the number of times a response choice can be chosen. Another great feature is the ability to turn form responses into a fillable PDF. For those who manage after-school clubs or other groups that need to collect payments, JotForm offers that option. But the best aspect of JotForm is the gallery of more than 10,000 premade form templates that you can use.
Within JotForm's gallery of templates there is a collection of more than 200 appointment form templates. You can customize the templates to fit your needs as well as integrate them with Google Calendar, Excel, Zoom, and a bunch of other helpful services. So if you're looking for an alternative to using Google Forms or Microsoft Forms to manage meeting scheduling, take a look at JotForm. I've included a couple of tutorials below to help you get started.